The latest Bluetooth V5.0 chip, high fidelity stereo sound, stunning bass effect, clear and stable continuous calls; Ultra low power consumption, continuous music playback for 10 hours Fast and stable transmission speed, with unobstructed transmission distance exceeding 20 meters; There are English voice prompts for startup, shutdown, successful pairing, low battery, maximum volume, etc; The iOS system can display battery level and activate and Voice intelligent voice assistants; Ultra thin speaker design of less than 1cm; Bluetooth specifications: V5.0+/A2DP/AVRCP/HFP Frequency range: 2.4026GHz-2.480GHz Transmission distance: over 20 meters Channel: Stereo Speaker parameters: 24 ohms/30mm Speaker power: 10 milliwatts x 2 Signal to noise ratio: 104dB Function: Previous song, Next song, Volume up, Volume down, Play, Pause, Answer call, Make call, Activate ,Microphone intercom Play time: 10 hours Talk time: over 9 hours Charging time: about 1.5 hours Button: Volume Down / Previous Song Power On / Power Off / Play/Pause/Answer/Hang Off / Redial Volume Up / Next Song Long Play/Pause button for 2 seconds to reject an incoming call. Double click button "+" to activate / deactivate on iSO device Specifications: Cat Color: As Shown Material: Cloth Package Contents: 1 * Headband 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.