Voltage: 5V Battery Life: 30 Hours & Up Connection: WiFi,Bluetooth-Compatible Battery Capacity[mAh]: 260mAh Function: music,Camera,VIDEO,Voice Assistant,calling Resolution: 1000W Camera: Bluetooth Call Recording: Wireless Music Smart Glasses Video recording: Voice Assistant AI voice assistant: Music Sunglasses video recording: Outdoor Sports Smart Glasses LED flashlight: 4K Power Source: AC Brand Name: MIJIA Compatibility: Android Battery Included: Yes Inbox adaptor: No State of Assembly: Ready-to-Go Communication method: Bluetooth-Compatible Communication method: NFC Power Source: AC&DC Origin: Mainland China Certification: CE Choice: yes semi_Choice: yes