OMFG focus on the prostate or G-spot: The Harmony Duo double dildo is the most nifty new vibrator category — which I call flappers, a.k.a. tappers or “kinky finger” vibes — paired up with a G-spot vibrator for the wearing partner!
P-spot power and impact, as the swinging tip hits it. My boyfriend says the only other toys this precise are the Pure Wand (small bulb) and the Aneros Psy massager. Our experience testing the Harmony Duo silicone vibrator for couples:
The Run-Down:
Flying-tapping double dildo, with G-spot bulb made to be worn. Focused tapping tip + vibrating dildo head, plus medium-strong vibration for the wearer. Dual pleasure for 2 partners. Smooth silicone. App control included.
$99.90 standard price at Honey Play Box.
$84.92 with code PHAL at checkout.
Pros & Cons
Pros
- Dramatic G-spot or prostate impact: over 500 taps/minute.
- Stimulates 2 people at once:
- Vibrating G-spot bulb fits inside vaginally.
- Curved dildo end vibrates too.
- App-controlled, so changing speeds is easier.
- Waterproof & rechargeable.
- Body-safe silicone is smooth.
Cons
- Requires 1–2 extra minute(s) to clean the tapping tongue!
- Secure thrusting requires a harness with pass-through O-ring. (This is true of all wearable double dildos.)
Harmony Duo by Honey Play Box is made of nonporous silicone, is 9.45″ total length, has a 1.53″ dildo diameter × 5.5″ dildo length, has 1.46″ G-spot bulb diameter × 3.8″ insertable length, is IPX7 waterproof, and is magnetic USB rechargeable.
My Review Criteria
All body-safe, zero BS. I only recommend body-safe toys, no bullshit and no paid promos. If I wouldn’t give a toy to a close friend, then I won’t recommend it to you, either. I’ve tested over 1,050 vibrators, 515 dildos, and 150 butt plugs (and a plethora of cock rings, kink gear, and lubes!). Everyone’s preferences vary, so I rate vibrating toys by 1. power level and 2. rumbliness; and always describe how my personal tastes color my experience.
Our Experience with Harmony Duo
We think the Harmony Duo’s fascinating as a toy for two people, at once, because it:
- For him (receiver): Gives such striking focus on his prostate: firm, inward pressure over a small area. The tapping is so fast, up to almost 10 beats a second, with 4.5″ maximum range of motion.
- For me (dildo-wearer): Is smartly shaped for G-spot on the wearable pony (vaginal bulb). I love the pretty blue color, and it looks so hot to have him suck my non-realistic “cock” when I wear Harmony Duo, sitting over the edge of my bed.
Prostate gland focus is for real here. The way this new generation of “tapping” or “flapping” vibrator’s tongue moves, is crazy. Insane in a “very stimulating” way. I recently tried the Flapper rabbit vibrator’s flicking against my G-spot, and could only think the stimulation level was akin to a stainless steel toy. Except, instead of being so sensational due to weight and firmness, it’s imposing due to its flutter-flying snap.
Likewise, the amount of stimulation even surpasses a thrusting dildo or pulsating dildo, since the Harmony Duo’s fluttering tongue has a wider range of motion, at 4.5 inches (right-to-left); versus 2.4 inches maximum thrust length (in-and-out) for the longest-thrusting dildo.
It can go quicker (without a big bulky motor attached) because the tongue’s a smaller mass! It’s 0.35 inches wide (versus 1.3 to 1.5″ standard dildo diameter); slim and flexible.
We’ve tested it for A.) dildo blowjobs (strapless) and for B.) strap-on sex the last couple weekends, and we had fun because the Harmony double-ender is like nothing else in my big body-safe toy collection.
I enjoyed the heck outta seeing his reaction from the P-spot flapping-tapping tongue. It makes it so I have to work less hard during strap-on sex: he comes faster, (yet satisfyingly) after about 15 minutes of solid build-up.
The dildo’s head is semi-realistic, with a ripply double ridge. I don’t mind wearing realistic dildos in a harness, but this look 10/10 appeals more to me. As the G-spot vibrating bulb sits inside my vagina, I adore telling him to start by sucking on the tip of my shaft now.
Since all 3 motors are independently controlled, I can get G-spot vibration only as he licks the dildo end. Meanwhile, the G-spot pony rocks back-and-forth gently: if he presses his mouth down it. This is the hardest I’ve ever cum while wearing a double-ended dildo. The size of the G-spot end fits me better, at 1.5″ width by just under 4″ length.
The Honey Play Box Harmony Duo has a quite-flexible neck between the dildo and pony ends. It bends well for me, fitting well. It does not try to snap back into place (and wiggle out of my vagina!) like the Fun Factory ShareVibe Pro, for example. It is not, however, posable like Strap-on-Me Doubles or Lovense Lapis. If you know that you have a long clitoris-to-vagina distance, you’ll likely get a better fit from posable “strapless” strap-ons.
How to Use Honey Play Box Harmony Duo
How to Control
To turn on the Honey Play Box Harmony Duo, hold down on the center button for 3 seconds. It will light up, showing the toy is in standby mode. (It can now be paired to the Bluetooth app anytime. Or control it manually:
The button closest the G-spot “pony” (wearer’s end) controls the G-spot vibration. The power button, when tapped again, turns on the dildo head’s vibration. Or, the button closest to the dildo-end controls the tapping / flapping tongue movement.
Then, tap any button to cycle through 9 vibration functions (or 9 tapping functions). Tap again, and again, to move through all 3 steady speeds + 6 rhythms/patterns.
How to Position
Some people are able to wear double-ended dildos fairly strapless. You can wear them without a harness, as long as you don’t: (A) open your legs too wide, or (B) pound in-and-out too hard.
I do like the “sitting on the edge of the bed” way of using the Harmony Duo 100% strapless. It will stay put if I’m stationary (I’m not moving around), and my boyfriend is the one making the motions. He can suck the dildo (fantastic for me, as I receive stimulation); or we’ve pulled off “strapless cowboy,” so both of us are actively getting pleasure. Here, I lay back in bed and he rides on top, looking down on me.
But, I feel freer in almost all positions if I am wearing a harness while thrusting such a dual pleasure dildo into my partner. It lets me focus on the act, on what we’re doing — instead of needing to remember I can’t do this or that, otherwise the toy will drop out of my vagina.
Want body-safe sex toy critiques, Cliff Notes version? Subscribe via email for our latest reviews!Care & Cleaning
It’s IPX7 waterproof, so feel free to submerge the Harmony Duo’s silicone + ABS plastic body.
To clean, just use your normal handsoap and scrub the Harmony Duo vibrator under running water from your sink. You must run your finger around the inner circle surrounding the Harmony Duo’s flapping bit, plus over the “tongue” or “kinky finger” and all its stimulation points! This will take about a minute.
It’s USB rechargeable, magnetically. The Harmony Duo’s charging nodes are found on the backside of the toy.
Honey Play Box App Control
The one thing to know about adjusting presets intensity in the Honey Play Box app: You must drag your finger around the circle clockwise to start (screen #3, below):
Downloading the app and connecting the vibrator to my phone was no problem, with a big “Bluetooth Connect” option at the top of the Honey Play Box app’s homescreen. You have to allow the app access to your phone’s bluetooth: which the app lets you accept via an “allow” prompt.
We use the Presets and Free Touch options for adjusting functions when together. Because the Harmony Duo is a couples vibrator, really, we haven’t used the long-distance app control much.
We did a “warmup” trial, where he walked down the street and sat outside to see if the connectivity worked, while I used Harmony Duo as a Gspot vibrator. It wasn’t the most streamlined UX, but the connection did work once we figured out how to sync in-app.
To LDR connect the Honey Play Box vibrator app:
- Both partners need to go to the Long Distance Play and give an email (use a throwaway if you want, you don’t need to verify anything) and make up a username.
- The partner who wants to be controlled needs to make sure their toy’s bluetooth is connected, via Bluetooth Connect on the homescreen.
- Then, go to the (heart in a bubble) icon on the bottom bar of the homescreen, 3rd from the left.
- Be texting your partner, so you know what their HPB app username is, or their unique ID. (Find this on the person icon on the bottom bar.)
- Again within the “heart within bubble” section, click Add Friend at the top of the screen.
- Search for their username. Add them. Wait for them to accept.
- Then, once they accept, they can drag their finger up and down the slider bars (right and left sides of the window).
- You can also do a video-call or voice call within the app, as they slide up and down to control flapping-tongue and vibration separately.
Honey Play Box Harmony Duo’s Vibration Functions and Strength
The Harmony Duo has 3 × 9 functions:
- Two vibrator motors (dildo-tip end, and vaginal bulb end),
- Plus the flipping-flicking-tapping tongue motor!
Both vibrating ends are moderately strong. The G-spot bulb has more rumble, while the dildo-tip has more grrr-bzzz. Since I’m more sensitive in terms of wanting lower-pitched vibration than my partner, who enjoys any speed of vibe strength for anal, this works well for us.
Recap & Rating
Harmony Duo by Honey Play Box is the most intriguing double pleasure dildo we’ve tested, because of how strongly the tapping focuses on his prostate gland. (It can also be a G-spot tapper, if the receiving partner instead has a vagina.)
Simultaneously, the G-spot bulb or pony rocks into my spot, vibrating. I like sitting and getting the dildo’s half-phallic head stroked or sucked too, as its sky-blue color emerges from my vagina, pointing upward with its strong curve!
Save 15% off 
with discount code PHAL on all Honey Play Box toys.
| Feature | Rating (out of 5) |
|---|---|
| Orgasms per dollar value: Awesome stimulation for the receiver (fast flappy-tappy fingering!), and good responsive stimulation for the wearer. His fave pegging toy for P-spot focus, my fave for “dildo blowjobs” as the internal pony vibrates and presses into my G-spot as I wear this double dildo. |
4.75 |
| User experience/ Ease of use: Good vibration. Workable app control = have your phone beside u to change speeds without having to stick a hand between ur two bodies. Very smooth silicone. Ergonomic dildo curve + vaginal pony. Over 400 pulses of tapping per minute. Flexible “neck” between dildo and pony will fit most; toy stays in place if I’m not moving. Use a harness if the Harmony Duo wearer is moving or changing position. |
4.5 |
| Luxury feel: Body-safe, smooth silicone; Sturdy, clean packaging with good quality storage pouch; USB magnetic rechargeable; Waterproof submersible; Decent app control (long-distance capable). |
4.9 |
| Run time (136 mins.) & easy charging | 4.6 |
| Total | 4.69 of 5  s |
| Vibration power, low-to-high intensity [vs. all vibrators] |
From 6.5 to 7.25 /out of 10 |
| Vibration depth (“rumble”), low-to-high |
G-spot end: 8.8 to 6.9 /out of 10 — Dual motors: 8.5 to 5.5 /out of 10 |
| Volume (decibels) |
36 to 52 dB |
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