Hidden Single Bluetooth Earphone, 3.7g Mini With Case
One earpiece, 17mm across and 3.7g on the ear, takes your calls and plays your music while the other ear stays bare. The charging case fits a pocket, and the built-in buttons handle play, pause, calls and Siri without touching your phone.
Read the full descriptionDescription
One earpiece, 17mm across and 3.7g on the ear, takes your calls and plays your music while the other ear stays bare. The charging case fits a pocket, and the built-in buttons handle play, pause, calls and Siri without touching your phone.
Virtually invisible true wireless earphone that is hidden in the ear
- bulky visible earbuds
- discomfort from heavy earphones
- need for hands-free calls and music on the go
Hands-free calls, with nothing showing in your ear
Bulky earbuds that stick out and weigh you down, swapped for one 17mm, 3.7g earpiece that disappears into your ear and sits in a pocket-sized case.
Small enough to forget it is there
Nothing visible in your ear
At 17mm, the earpiece sits inside the ear instead of hanging off it. Nobody across the carriage or the desk sees gear, only the ear itself. It is the single biggest reason this beats a bulkier pair for people who care how they look on calls.

Light enough to forget
At 3.7g per earpiece, you barely register it on a call, a walk or a long commute. Heavy earbuds pull on the ear after an hour. One light earpiece does not, which is why it works for people who wear audio all day.

Controls you can reach
A single click plays or pauses. Two clicks answer a call. A long press wakes Siri, and a five-second press powers the earpiece on or off. You learn the presses in a day, so you can take a call without pulling out the phone.
Compact specs, no guesswork
- 17mmCompact earpiece fuselage
- 3.7gPer earpiece
- 3 hoursMusic play time per packaging
Five controls, one earpiece
- 1Power on or off
Long press for 5 seconds. Use the same press to power down when you finish for the day.
- 2Play or pause
Click once. The same press works for music and to pause a track during a call.
- 3Answer or end a call
Click twice to answer, and click twice again to end the call.
- 4Switch songs
Press twice in quick succession to move to the next track while you listen.
- 5Wake Siri
Long press for 2 seconds to bring up your voice assistant without reaching for your phone.
One earpiece, one charging case
- Single wireless earphone×1
Glossy black, 17mm body, 3.7g
- Charging case×1
Pearl white case with a silver hinge band
From bulky buds to nothing showing
The bulk you've learned to ignore
Visible earbuds sit out from the ear, catch the light and feel heavier the longer you wear them. By the end of a commute, most people can feel every gram. Calls are worse. You dig for your phone, miss the ring, and end up holding a call with one hand while you scroll for the right app.
One earpiece, nothing showing
The X20 is one earpiece at 17mm and 3.7g. It sits inside the ear, so the only thing other people see is a clean ear. You get Bluetooth calls and music from a single side, and the other ear stays open for traffic, announcements and conversation.
Calls without the juggling
Keep the case in a pocket, seat the earpiece, and press once to play or pause. Two presses answer a call. The day runs on your own schedule instead of your phone's, and the case is small enough to carry every day without thinking about it. Pick up a earbud case if you want a second layer of protection for the pocket.
Getting used to it, step by step
- First usePair and place it
Charge the case, power on with a five-second press, and pair with your phone. Seat the earpiece gently and check it feels comfortable before your first call.
- 3 usesFind your fit
Try it on a commute, a call and a walk. Adjust the position until you can reach the buttons without looking.
- 30 daysMake it routine
The case becomes your charging habit and the presses feel automatic. Judge the fit on your own commute and calls.
Why this, not that
| This | Visible true-wireless pair | Wired headset | |
|---|---|---|---|
| Sits inside the ear, nothing protruding | — | — | |
| One ear left free for the room | — | Partial | |
| Cable to tangle or snag | — | — | |
| Controls on the earpiece | Partial |
Characteristics
Reviews
Questions and answers
Both. The single earpiece plays music and takes calls. Music comes through one ear, so it suits podcasts, playlists and background audio better than a full stereo pair.
The packaging claims up to 3 hours of music playback. Charge the case fully before a long day, then top up between days. The case is your charger, so the habit is simple.
Seat it snugly before you start. The 17mm body sits inside the ear rather than hanging off it, but fit varies from ear to ear, so check it on a short walk before a longer run.
Long press for 2 seconds to wake Siri. Click twice to answer a call and click twice again to end it. Learn the presses on a quiet walk so they feel natural in a busy place.
You get one earpiece and one charging case in the box, with no second accessory to buy. If you only need one ear for calls and music, you pay for the part you use and nothing more.
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