Features: 1. listening to the song correct, support songs and call, 2. Power capacity will show on your Iphone, you can see the power situation anytime; 3. One to two connections, can be connected to two mobile phones at the same time 4. Bluetooth headset connected to the phone after the shutdown, and then open the Bluetooth headset will connect back to the phone automatically, more convenient; 5. Intelligent compatibility: support all Bluetooth mobile phone, tablet, notebook,etc., universal all mobile phone Specification: 1. Bluetooth version: Bluetooth v5.0 2. Bluetooth distance: 10 meters barrier 3. With A2DP / AVRCP high quality stereo audio transmission and remote control protocol 4. Powerful noise de-noising circuit (active noise reduction) 5. music time about 3-4 hours Package Includes: 2 x i16 tws bluetooth earphones (left and right earphone) 1 x Charging box 1 x USB Charging Cable 1 x User Manual