Bluetooth Sleep Mask Wireless Sleep Headphones 3d Bluetooth Headphones Product name: New type sleep mask Home smart Amazon popular eye mask Bluetooth 5.0 wireless music call, black Color box weight: 105g Single eye mask: 76g Size of color box: 13 * 16.5 * 6 (including card head) Horn: 32 0.05 W Battery: 150mA battery 3.7V Battery: 150mA battery 3.7V Impulse power for 2 hours and listen to music for 8 hours Operation mode: 1. In the shutdown state, press and hold for 3 seconds to start the machine; In the power on state, long press for 3 seconds to shut down; 2. After power on, it will automatically connect the last Bluetooth handheld device. If it is the first time, it will immediately enter the self pairing mode with English voice prompts. 3. After pairing with the Bluetooth of the handheld device, the audio can be played. Short click "Pause" and short click "Play". In the call status, briefly press "Answer call", long press "Reject call", and quickly double-click "Dial the latest call". Right button): 4. To play audio, briefly press Next and long press Volume Up. Left button): Play audio by briefly pressing "Previous song" and long pressing "Volume reduction".