Item Type: Smart Glasses Material: ABS Battery Capacity: Built In 110mAh Lithium Ion Battery (Included) Bluetooth Version: 5.0 Transmission Distance: Approx. 10m/32.8ft1Compact Design: Smart glasses promote a healthy life with a skinny design that allows for a full range of outdoor activities. With these bluetooth wireless smart sunglasses, everything from a leisurely walk to cycling to a game of football is possible. 2Bluetooth 5.0 Version: Smart sunglasses adopts bluetooth 5.0 version, 10 meters effective distance, wireless sound glasses connect with your mobile device via Bluetooth and transmit its sound, while freeing your ears and keeping you away from the phone screen. 3Low Latency Sound: Smart sunglasses features low latency sound, and its industry leading 60ms Bluetooth connectivity delivers fluent, stutter free sound, immersing you in an immersive experience without interruption due to sound delays or skips. 4Hands Free Call: Smart glasses built in microphone and speaker, with this smart sound glasses you can be hands free when answering calls, thanks to the omnidirectional microphone built into its frame. 5Bluetooth Function: Stylish portable wireless bluetooth glasses. This machine supports Bluetooth protocol, supports smartphones, tablets, notebooks and other devices with Bluetooth sound function, allowing you to completely get rid of the shackles of wires and enjoy music fun without restrictions. 1 x Bluetooth Glasses 1 x Wiping Cloth 1 x Storage Bag 1 x Charging Cable 1 x Instruction Manual