Bluetooth Headphones, BESTTRENDY Wireless Headphones Stereo Bluetooth 4.1 Sport Earbuds Headset Bluetooth Earbus with Mic Noise Cancelling Sweat Proof Earphones

HD sound: Bluetooth v4.1 and noise reduction technology provides lossless stereo sound. Specifications: Bluetotoh Version: Bluetooth V4.1 Support: A2DP, AVRCP/Handfree, HFP, HSP Working Distance??33ft/10m ?Barrier-free? Charging Time?less than 1 hour Talk Time?Up to 4 Hours Music Time?about 3-4 Hours (Note: Playtime varies according to the volume level and the audio content) Standby Time: about 50 Hours What's you get: 1 X Wireless Bluetooth Headphones 1 X USB Charging Cable 1 X User Manual --Note: --1)Charging the product requires a maximum of 1 hour. We recommend unplugging them when not charging. CAUTION: Only use the Micro USB cable that comes with the unit. Charger (NOT included) output voltage/current: 5V/500mAh(0.5A). Do Not substitute other cables, which may cause overheating. If the unit feels hot at any time during charging, unplug the unit. --2) During the charging process, the indicator light will turn red, and after full charge, the indicator light will turn blue. Please unplug the charger at this time