Latest Bluetooth V5.0 chip, high fidelity stereo sound, shocking bass effect, clear and stable continuous call; Ultra-low power consumption, can continuously for 10 hours Fast and stable transmission speed, barrier-free transmission distance of more than 20 meters; English voice prompts for power on, power off, successful pairing, low battery, maximum volume, etc; iOS system shows battery level and activates and Voice intelligent voice assistants;Ultra-thin speaker design of less than 1cm Bluetooth specification: V5.0+/A2DP/AVRCP/HFP Frequency range: 2.4026GHz-2.480GHz Transmission distance: more than 20 meters Channel: Stereo Stereo Speaker Parameters: 24 Ohm/30 mm Speaker power: 10 mW * 2 Signal-to-noise ratio: 104dB Functions: Previous song, Next song Previous song, Next song, Volume up, Volume down, Play, Pause, Answer a call, Make a call, Activate , Microphone intercom Playback time: 10 hours Talk time: over 9 hours Charging time: . 1.5 hours Buttons Volume down/previous song Power on/off/play/pause/answer/hang up/redial Volume up/Next song and hold the play/pause button for 2 seconds to reject a call. Double-click the "+" button to activate/deactivate on the device Colour:blue Material: Fleece Package Contents: 1 * Eye Mask Bluetooth Headset Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.