Tronsmart Sounfii R4 Wireless Bluetooth Earphones Earbuds TWS, Balck
-25%
| Products ID: | 108872 |
|---|---|
| Availablity: | SOLDOUT! |
TWS Tronsmart Sounfii R4 headphones (black)
Discover your favorite songs in even better quality. The Tronsmart Sounfii R4 headphones are equipped with 12-millimeter drivers, so they can deliver stunning, detail-saturated sound. They are also distinguished by their long operating time (up to 7 hours) and ergonomic design. In addition, Bluetooth 5.3 guarantees reliable transmission and fast, seamless pairing.
Fantastic sound
Experience how good your favorite songs can sound. The Tronsmart Sounfii R4 headphones feature 12-millimeter drivers with titanium composite diaphragms. As a result, they deliver fantastic sound quality, ear-pleasing treble and deep, powerful bass. Discover new details of the songs you love to listen to, and in your own room feel like you're at a concert!
Perfect fit
Sounfii R4 headphones are designed for maximum comfort. Thanks to their ergonomic design, they fit perfectly in your ears and won't fall out of them - even when you move a lot. They also do not exert unpleasant pressure - forget about pain and fatigue. With Tronsmart, listening to music becomes more enjoyable than ever before!
Perfect for conversations
Do you often talk on the phone? Now you can answer a call without any problems even in an extremely noisy place! Each Sounfii R4 headphone is equipped with 2 microphones and offers noise cancellation, so you can be sure that you and your caller will hear each other perfectly. The bus, the office, the mall - with Tronsmart you can talk wherever you want with ease.
Reliable Bluetooth 5.3 connection
Tronsmart Sounfii R4 support Bluetooth 5.3 technology, allowing you to enjoy a reliable, stable connection in almost any situation. Say goodbye to delays, interference and other signal problems! The solution used also makes pairing headphones with devices quick and easy - complicated, lengthy setup is a thing of the past.
Many hours of music
Do you plan to listen to music at work? Or maybe you are going on a trip and want your favorite songs to accompany you all the way? No problem - fully charged Sounfii R4 headphones can last you up to 7 hours! You don't have to worry about them refusing to serve you too soon. What's more, the included case allows you to extend this time up to 28 hours. Charging the headphones won't take long either - after about 3 hours they will be ready for use again.
Touch control
Enjoy convenient access to the most important functions of the headphones. Sounfii R4 are equipped with practical touch panels, with which you can, for example, switch the song, stop playback, activate the voice assistant or answer the phone. You no longer need to reach for your smartphone every time!
Included
- Headphones
- Charging case
- USB-C charging cable
- Spare rubber bands (2 pairs)
- User manual
| Manufacturer | Tronsmart |
|---|---|
| Model | Sounfii R4 |
| Color | Black |
| Bluetooth version | 5.3 |
| Frequency response | 2402-2480 MHz |
| Transducer | 12 mm, composite diaphragm |
| Battery capacity | Headphones: 35 mAh; Charging case: 400 mAh; |
| Operating time | Approx. 7 h, up to 28 h with case (volume 50%) |
| Charging time | Approx. 3 h |
| Water resistance | IPX4 |
SMS & email notification
SMS notification before arrival
We want you to be happy with your purchase. If something isn't right, here's how returns work.
Return window
Most unused items can be returned within 30 days of delivery for a full refund or exchange. Items must be in original condition with original packaging.
Refund timeline
Once we receive and inspect your return, a refund is issued within 7–10 business days to the original payment method.
Conditions
- Item must be unused and in original condition
- Include your receipt or proof of purchase
- Perishable or custom-made items are non-returnable
- Return shipping is covered only for faulty or incorrect items
Ready to return?
Contact us and we'll guide you through the process.




























