F08 Men Style Bluetooth 5.3 Smart Sunglasses Wireless Headset Anti-Strong Light Anti-Polarized Sunglasses 1. Sound channel system: wireless stereo 2. Control mode touch mode 3. Waterproof rating: IPX4 4. Bluetooth program: Jelly AC7003F4 5. Bluetooth version: V5.3 6. Support Bluetooth protocol: HFP, A2DP, AVRCP, HSP, BR+EDR+BLE 7. Bluetooth operating frequency: 2.4GHZ-2.4835GHZ ISM Band 8. Bluetooth effective distance: about 10m 9. Speaker power: 1.2W 10. Headphone amplifier type: ANT8112 Class D amplifier 11. Frequency response: 20-20000Hz 12. Speaker unit: 8 Europe electric 0916 speakers 13. Microphone: electret condenser microphone 14. Built-in battery: lithium-ion polymer battery 3.7V 80mAh 15. Charging current: 60mA 16. Charging port: Type-CUSB-C 17. Charging time: about 2h 18. Use time: about 2.4-3h 19. Standby time: about 6 months 20. Saturation voltage: 4.2V 21. Over discharge protection: 3.3V 22. Weight: about 30g Features: 1. HD anti-UV lenses, clearer vision, high-definition vision, anti-UV, strong and unbreakable, eliminating glare 2. Lightweight frame, comfortable to wear, long wear without pain 3. One-piece nosepiece design, fit the nose shape, reduce indentation 4. Bluetooth 5.3 stereo sound, stable performance, strong compatibility, stronger function, high-definition call sound quality 5. Dual speakers, directional sound, maintain privacy, accurate sound into the ear 6. Touch connection, multi-functional and convenient operation 7. Hinges adjustable, not pinching face 8. Curved mirror legs, not easy to slip 9. IPX4 level waterproof, easy to deal with various situations 10. Type-CUSB-C charging interface, convenient and quick