Smart Glasses Calls Music Audio Outdoor Headphone Sunglasses SpecificationItem Type: Smart SunglassesFrequency: 2.402-2.480GHzMode: Headset A2DPAVRCTransmission Distance: Approx. 10 Meters/10.9yMusic Playing Time: About 4 HoursCall Time: About 5 HoursBattery Type: Lithium Battery 401230(Built-in)Battery Capacity: 3.7V/110mAhCharging Voltage and Current: DC5V/500maCharging Time: 2-3 HoursHeadphone Power: 32Ω/0.5WReceiving Sensitivity: -40dbmAudio Range: 20hz-20khzDistortion: <=0.2%95dB Package List1 x Glasses1 x Headset1 x Instructions1 x USB Cable1 x Glasses Case1 x Glasses Cloth Smart Glasses, Polarized Sunglasses with Bluetooth Speaker Bluetooth Sunglasses Smart Glasses, Bluetooth Glasses with Speaker Audio Glasses Smart Glasses, Wireless Bluetooth Glasses with Speaker and Mic Touch Lazy Glasses, Bed Prism Spectacles Horizontal Mirror Lazy Readers Glasses Lazy Glasses Mirror Glasses, 90 Degree Glasses for Laying Down Reading Add To Basket Add To Basket Add To Basket Add To Basket Add To Basket Customer Reviews 3.4 out of 5 stars 3 — — — — Price £19.69£19.69 £33.09£33.09 £40.49£40.49 £15.69£15.69 £9.89£9.89 Material ABS ABS PC ABS, Optical Glass ABS, Optical Glass Function Smart Bluetooth Sunglasses Bluetooth Glasses Smart Glasses Lazy Glasses Lazy Glasses Easy to use ✓ ✓ ✓ ✓ ✓