Item Type: Smart Glasses Material: ABS, PC, Electronic Components Weight: Approx. 181g / 6.4oz Battery Type: Lithium Battery (Shipped with Built-in Battery) Battery Capacity: 80mAh Talk Time: 6 to 8 Hours Charging Time: 1 to 2 Hours Bluetooth Version: V5.0 Transmission Distance: Outdoor Linear Distance of 15-20m / 49.2-65.6ft How to Use: Audio Glasses On/Off Operation: Power On: Long press MFB for 3 seconds to turn on (red and blue lights flash rapidly, audio cue: Power on). Power Off: Press and hold MFB for 3 seconds when powered on; red light stays on for 2 seconds (audio cue: Power off), indicating the device is turned off. Audio Glasses Pairing and Disconnection: 1. Enter pairing mode: Device automatically enters pairing mode upon first power-on; red and blue lights flash alternately (audio cue: Pairing), ready to pair. 2. Pairing between left and right glasses: If pairing is successful, blue lights flash alternately; left ear blue light flashes slowly (audio cue: DU). Phone Pairing: After successful connection, left ear blue light remains steady (audio cue: Bluetooth has been connected). Bluetooth Disconnection: 1. Disconnect between left and right glasses: Right ear red and blue lights flash alternately. 2. Disconnect from phone: Left ear red and blue lights flash alternately. Touch Function Operations: 1. After power on: Double tap to switch between English and Chinese prompts. 2. Single tap: Play/pause or answer/end call. 3. Double tap: Left ear – next track; Right ear – previous track. 4. Triple tap: Left ear – volume down; Right ear – volume up. 5. Long press for 2 seconds: Activate voice assistant. 6. Auto power-off: Automatically powers off after 5 minutes of inactivity (audio cue: Power off). Low Battery Alert: 1. When voltage drops below 3.3V, low battery warning sound plays every 30 seconds. 2. LED Indicator: Red light blinks slowly (audio cue: Low battery). Charging Indicators: When charging below 4.0V, red light stays on. When fully charged at 4.1V, blue light stays on. Features: 1. Open Sound Design: Dual speakers and a custom audio processor deliver clear audio around your ears. Enjoy music while staying aware of your surroundings. 2. Hands-Free Calling: Tap the glasses temple to answer or end calls. Dual microphones provide clear voice pickup and reduce background noise, ensuring privacy. 3. Interchangeable Frames: Detachable front frame allows you to switch between polarized sunglasses and blue light filtering lenses. 4. Comfortable Fit: Flexible hinges provide a secure and comfortable fit for a wide range of face shapes. 5. Long Battery Life: Up to 8 hours of continuous use on a single charge, suitable for hiking, running errands, or household tasks.