Humanized design: Soft nose bridge design, more suitable for face shape, more comfortable to wear. Frame wind guide design, tough lenses, impact resistance, reduce the stuffiness when riding. TR tough frame, comfortable clamping force can effectively reduce head pressure, suitable for most people's face shape. Dual Bluetooth: Adopt Bluetooth connection, cool Bluetooth 5.3 chip technology, performance upgrade, lower power consumption, longer battery life, smarter algorithm. Multi-function & easy operation: Smart Bluetooth glasses can answer or reject calls, play and pause music, and wake up assistant. Just and hold for 2 seconds to turn on, and and hold for 5 seconds to turn off. Click the button to answer or hang up the call, and and hold for 1.5 seconds to reject the call. When playing music, click the button to play or pause the music. When playing music, and hold the button for 1.5 seconds to wake up assistant. Ultra-long battery life: Using TYPE-C charging interface, built-in 130mAh large battery, charging for about 1 hour, can be used continuously for 4-5 hours, standby to 50 hours, no longer have to worry about running out of power. Wide range of applications: UV400 filters ultraviolet rays, effectively reducing damage to the eyes. Suitable for use in mountaineering, seven-star, fishing, running, leisure and other environments. Name:Smart Bluetooth Glasses Bluetooth protocol: 5.3 Charging time: about 1 hour Talk time: about 4-5 hours Music playback time: about 4-5 hours Standby time: about 50 hours Battery capacity: 130mAh Channel: stereo, dual channel Applicable occasions: game/cycling/driving/running/fishing Color:B:Multicolor Material:ABS+PC Package Contents: 1 * Smart bluetooth Glasses 1 * Charging Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.