Athlete Bluetooth Stereo Earphone Ultralight design quick start Ultra-low power consumption, Enhance audio Compatible with all kinds of digital products on the market Built-in MIC Function:Accept/Finish/Reject/Transfer Call, call waiting, recall, sound off, Volume +/-, multipoint connecting, Music pause/play, Noise reduction, Pre/Next song switch, Take photo by yourself Pair up to 2 Bluetooth devices Bluetooth version: V4.1 Frequency range: 2.4GHz-2.48GHz Operating distance: Up to 10m (free space) Bluetooth profiles: A2DP, AVRCP, HSP, HFP Standby time: Up to 180hrs Talk/music playtime: Approximately 4 -5hours Charging time: Approximately 2 hours Frequency response: 20Hz-20kHz Operational temperature: -10 Noise reduction: CVC6.0 Accessories: 1*USB cable, 1*manul, 6*ear rubber, 6*ear hook Packing: Each in Gift box Stock color: Green, White, Black, Red, Yellow Each in neutral gift box, accessories include 1*USB charger cable + 1*manul + 6*ear rubber+ 6*ear hook