USAMS Bluetooth 5.0 TWS IA Series Wireless Headphones Black

USAMS TWS IA-Series Comfort Headset. Comfort and great design in one. Thanks to the use of tri-band equalization the three-band equalization makes the headset sound clearer and noise-free. Small and small and lightweight, they go wherever you go-whether at work, during a workout, or or while cycling. Headphones with built-in microphone use Bluetooth 5.0 +EDR/BDR/BLE standard. The set also includes includes a dedicated case that works as a power bank. Material: ABS + PC BT version: 5.0 Communication range: ?12m Speaker diameter: 13mm Sensitivity: 112 ± 3db Frequency response: 20 Hz ~ 20 KHz Impedance: 32? Earphone weight: about 3g * 2 Battery capacity in-ear headphones: 25 mAh; Playback time: about 4h (80% volume) Talk time: about 3h (two earbuds work) Earphone charging time: about 1 hour Weight of charging case: approx. 35g Battery capacity of charging case: 320 mAh Charging time charging time: approximately 1 hour Standby time: approximately 25 hours