Special highlight:  LED digital battery value display, you can know the remaining power of the earphones and charging box at any time  Super mini size, eazy to carry  The bluetooth 5.0 chip ensures the stable transmission without delay and low power consumption.  Earphones can be connected to a device at the same time, or they also can be used separately.  This is very convenient for you to listen to music, play games and answer calls. Specification: • Material: High quality material • Bluetooth version: 5.0 • Effective linear distance: 10-15m • Speaker diameter: 8mm • Battery capacity: 30mAh (single earphone), 400mAh (charging box -Included) • Playback time: Single earphone: 3.5 hours (Maximum volume)/ 4 hours (Medium volume); Dual Earphones: 3 hours (Maximum volume)/ 4 hours (Medium Volume) • Standby time: 200 hours • Earphones charging time: about 50 minutes • Charging box time: Charging time: about 1 hour • Features: Bluetooth 5.0, Wireless, In-Ear, Hands-free, LED Digital Display • Charging Box Size: 6.8cm x 4.2cm x 2.5cm/2.68" x 1.65" x 0.98" (Approx.) • Colour: As shown in picture only • Fitment: Universal