1.--Bluetooth-compatible 5.3 chip, faster transmission speed, longer transmission distance, stable and anti-interference. 2.--13mm large dynamic coil, semi-in-ear ENC call technology, intelligent noise reduction for clear calls. 3.--Touch control, support power display. 4.--Compact, transparent appearance, multi-color optional. 5.--Long battery life. Listen to music for about 4.5 hours, talk for about 4.5 hours; 6.--Widely compatible for Android IOS mobile phones. Description: Name: Headset Color: black, white, green, purple Material: ABS Model: BH15 Bluetooth-compatible version: V5.3 Charging bin capacity: 300mah Charging time: 1.5h Call life time: about 5H Charging interface: Micro Bluetooth-compatible distance: 10M Packing list: Headset x 2 Charging Cabin x 1 Charging Cable x 1 Instruction x 1 Note: 1. Due to manual measurement, please allow 1-3cm error. Make sure you don't mind before bidding. 2. Due to the difference of different monitors, the picture may not reflect the actual color of the product. Thanks.