High-quality sound effects, bring an excellent music experience The left and right earphones can be used separately Smart touch design, simple operation Lightweight and comfortable to wear, no pressure to your ears Low power consumption, long standby time Compatible with tablets, mobile phones and other devices with Bluetooth-compatible function Support master-slave switching, call Siri, modify pairing name, does not support pop-up window Specification: Bluetooth-compatible version: 5.1 Chip: JL AC6973 Battery capacity: charging compartment 350mAh, earphone 30mAh Talk/music time: 4 hours, 200 hours standby Size: 53.8*44.3*21.5mm Net weight: 47g Package included: 1 x Pair of Bluetooth-compatible Earphones 1 x Charging Case 1 x Charging Cable 1 x English and Chinese User Manual