Features: 1. listening to the song correct, support songs and call, 2. remind call number, the last call back, all intelligent Chinese and English voice prompts, boot, pair, shut down the phone power will be low voice prompts; 3. Power capacity will show on your Iphone, you can see the power situation anytime, do not worry about the electricity ,make your life without worry; 4. One to two connections, can be connected to two mobile phones at the same time 5. Bluetooth headset connected to the phone after the shutdown , and then open the Bluetooth headset will connect back to the phone automatically , more convenient; 6. Intelligent compatibility: support all Bluetooth mobile phone, tablet, notebook, singing it, QQ music, movies, etc., universal all mobile phone Specification: *Modle:i12 TWS *Bluetooth version: Bluetooth 5.0 *Transmission distance: outdoor straight line distance 10-15 meters *Battery capacity: polymer lithium battery *Function: fast charging, HD call *Listening to music time: about 6 hours *call time: about 6 hours *Standby time: 150 hours *Charging time: 30min Package Includes: 2 x i12 Bluetooth Headphones(left and right earphones) 1 x Charging box 1 x USB Charging Cable 1 x User Manual