Features: With these smart glasses, you can listen to music, makes hands free calls, or receive navigation directions as you work or exercise. The wireless Bluetooth sunglasses are compatible with any Bluetooth enabled device, including iOS/Android devices. These smart sunglasses keep you safe and comfortable. Enjoy premium clarity and sun light reduction to ensure you see where you are going. Anti blue-ray glasses prevent computer radiate when you are working in office or playing at home, ease your eye strain. These inventive smart sunglasses are designed to fit both men and women. Type: Smart Glasses Headset Blutooth version: 5.0 Waterproof: IP7 waterproof performance Frequency: 2.402~2.480GHz Distance: 10 meters transmission distance Call: Call duration 4-5h Charging: Charging time 2-3h Music: Music duration 3-4h Battery: 3.7v/200mAH Size: about 150mm x 148mm x 5cm(length x width x height)