• Bluetooth 5.0 connection, bringing HiFi sound quality and stable performance
• With ergonomic design, light in weight, comfortable to wear, with no burden on your ears
• Easy to wake up voice assistant by touch control 
• Longer working time, 4h continuous listening to music and 200h for standby
• The sunglass is UV protected and polarized to keep you safe and comfortable. Enjoy premium clarity and sun glare reduction to ensure you always see where you're going
• Listen to your favorite music or make calls, while still being aware of the noises around you

Specification:

• Bluetooth version: V5.0+EDR
• Wireless distance: 10-15 meters
• Music time: 4 hours
• Bluetooth protocol: HSP/A2DP/AVRCP
• Frequency range: 2402-2480MHZ
• Talk time: 5 hours
• Charging voltage: USB DC5V
• Charging time: 1.5-2 hours
• Standby time: 200 hours
• Battery capacity: 3.7V/120mAh
• Weight: 31g