ITEM NAME:K21 Wireless Bluetooth 4.1 Business Headsets Headphone Earphone Super Long P4X5 K21 Wireless Bluetooth 4.1 Business Headsets Headphone Earphone Super Long P4X5 Hanging ear design, feel zero pressure, wear painless for a long time.The auricle design, the earphone and the ear bones fit together. With 300 mAh lithium battery, you can achieve continuous standby for about 70 days without changing the battery, listening to songs about 24H, and talking about 32H. Funny filter noise, deep restore the recorded sound. The left and right ears can be freely converted to wear. Anti-sweat, as well as smart voice prompts. Color: black+silver Material: ABS Size:7cm Bluetooth version: V 4.1 Charging mode: 5V/1A charger Boot: long press for 3 seconds Shutdown: long press for 4 seconds Pairing: long press for 5 seconds Answer/hang up: short press once Reject: double click Play/Pause: Short press once Previous song: long press for 2 seconds Package: 1* Bluetooth earphone 1* usb Charger cable
