Sunglasses with Bluetooth headphones

Black with bluetooth connectable 8-16 hrs stereo headset. Plug in TF memory card to play music plus FM radio function. Connect to also make and receive phone calls up to 30 hours & 240 on standby mode. Charging time 2hrs. Battery capacity: 180mA polymer lithium battery. Android Apple mobile phone tablet notebook With Bluetooth device. This are super and own a pair myself great for camping trip, communicating and more.