Bluetooth version: V4.1 aptx Chipset Solution: JL (Chinese Solution) Support Bluetooth: HSP/HFP/A2DP/AVRCP Audio: Stereo earphones with built-in mic for hands-free-calling Speaker size: 8mm Operating range: up to10mï¼?open-spaceï¼? RF Frequency Response: 2.402~2.480GHZ ISM band Battery: 76 mAh Talking time: Music playing time: 4-6 hours Stand-by time: up 170 hours Charing time: 1-2 hours Charging voltage: 5V
