Features: Fashion Headphones:  FIIL TWS is designed by German design affairs, with tough and simple line aesthetics, subverting the inherent form of true wireless.  Lightweight to wear: FIIL TWS adopts a semi-in-ear design that does not squeeze the ear canal. Its compact body is lighter than A4 paper. It has been worn comfortably for a day, but it has forgotten its existence.  Binaural use:  Bluetooth 5.0 chips are built into two earphones, and either earphone can be connected immediately. With FI IL flash connection technology, the single-binaural mode can be switched seamlessly.  Noise reduction mode: FIIL TWS adopts dual microphone call noise reduction technology and adaptive beamforming to reduce the environmental noise in real time. Even if you are on the subway, you can make your voice clear.  Touch control: FIIL TWS adopts capacitive touch, and preset two control schemes, which can complete the operations of playing, pausing, answering, etc. by touching without a mobile phone.     Specification: Bluetooth version: Bluetooth 5.2.  Transmission distance: >10 meters.  Bluetooth audio decoding: ACC, SBC.  Single battery life: 6.5 hours.  Extra battery life of the charging box: 30 hours.  Battery capacity: earplugs (~40mah), charging box (420mah, 3.7V).  Charging time*: earphone about 50 minutes, charging box 100min(Wired/Wireless).  Speaker size: 10.1mm customized titanium diaphragm.  Speaker frequency response: 20Hz~20kHz.  Speaker sensitivity: 104.6dB ± 1.5dB at1KHzat0.179V.     Pacakge List: 1 * Charging Box.  2 * bluethooth Earphones.  1 * Type-C Charging Cable.  6 * Silicone earplugs.  1 * Quick Operation Guide.  1 * Instruction Manual