Bluetooth Sleep Mask Wireless Sleep Headphones 3D Bluetooth Earbuds 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 Color Box Size: 13 * 16.5 * 6 (including card header) Horn: 32 Ω 0.05 W Battery: 150mA battery 3.7V Battery: 150mA battery 3.7V 2-hour charge, 8-hour music playback Operation Mode: 1. In the off state, press and hold for 3 seconds to power on; In the on state, press and hold for 3 seconds to power off; 2. After powering on, it will automatically connect to 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 Bluetooth on the handheld device, the audio can be played. Short click "Pause" and short click "Play". In call status, short press "Answer call", long press "Reject call", and quickly double-click "Call last number". (Right button): 4. To play audio, short press "Next" and long press "Volume up". (Left button): Play audio by short pressing "Previous song" and long pressing "Volume down".