JH-S9100 Waterproof Wireless Earphones Mini TWS Bluetooth Headset Description: TWS Waterproof Wireless Earphones Mini Twins Stereo Bluetooth Headset with Charging Box for Emergecy Invisible in Ear Ultra-Small Sports Wireless Bluetooth 4.1 Stereo Headset Mini Earphone with Microphone Hands-free Calling. Compatible with most Bluetooth-enabled devices. This will connect automatically with a phone paired previously. Built-in A2DP /AVRC audio processing system, can be a very good eliminate Noise and echo,Perfect for Stealth Listening or watching at work. NOTE: The language can be switched easily and freely, so please don't worry about this problem. If you don't know how to change language, I will tell you how to switch it via e-mail. Features: Bluetooth version:bluetooth 4.1 battery capacity: Earbuds 45mAh Charging Box 300mAh Talk/Music time:about 2.5 hours Standby time:48hours Charging box capacity:300mAh Color:Black Package Includes: 1* Bluetooth Headset 1* USB Charging Cable 1* User Manual