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Tronsmart Sounfii R4 Earphones are made for music and optimized for use in any environment - working from home, at the office, or on the go. Designed with a custom acoustic platform, Sounfii R4 Earphones are engineered to deliver powerful, balanced sound in a compact, in-ear form factor. These earbuds have 4-mic call technology for clear virtual meetings or mobile phone calls, ENC for better focus, and are comfortable for all-day use. Each earbud has up to 7 hours of listening time with two additional charges provided by its pocket-sized charging case to give you up to 28 hours of combined playback.
| Headphone type | Earbuds |
| Headphone style | In-Ear |
| Noise control technology | Active Noise Cancellation |
| Wireless | Y |
| Battery life | 16 h |
| Brand | Tronsmart |
| Rec. use | Casual Listening, Classroom, DJ, Metal Detector, Sports, Video Gaming |
| Works with | Android, IOS |
| Color | Black |
| Ear pad material | ABS |
| Battery consumption type | Integrated Rechargeable Battery |
| Accessories | 1 x Sounfii R4 ENC Earphones 2 x Extra Pairs of Eartips 1 x Charging Cable 1 x Warranty Card 1 x User Manual |
| Power type | Battery |
| Material | abs |
| Generation | 2026 ENC Earphones |
| Compatible smart control systems | SmartThings |
| Video game platform | Mobile, PC |
| Model | Tronsmart Sounfii R4 |
| Assembled product height | 2 in |
| Assembled product weight | 0.3 lb |
| Age group | Adult, Teen |
| Virtual assistant | ENC Earphones |