Humanized Design: Soft nose bridge design, more suitable for face shape, more comfortable to wear. Frame wind guide design, tough lens, impact resistance, reduce the feeling of stuffiness during riding. TR tough frame, comfortable clamping force can effectively reduce head pressure, suitable for most people's face shape. Dual bluetooth: Using Bluetooth connection, cool Bluetooth 5.3 chip technology, performance upgrade, lower power consumption, longer battery life, smarter algorithm. Multi-function & simple operation: Smart Bluetooth glasses can answer or reject calls, play and pause music, and wake up voice assistants. Just and hold the button for 2 seconds to turn on, and and hold for 5 seconds to turn off. Click the button once to answer or hang up the call, and and hold for 1.5 seconds to reject the call. When the music is playing, click the button once to play or pause the music. When the music is playing, 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 time is about 1 hour, can be used continuously for 4-5 hours, and can standby to 50 hours, no longer have to worry about running out of power. Wide range of applications: UV400 filters ultraviolet rays, which can effectively reduce damage to the eyes. It is suitable for mountaineering, seven-star, fishing, running and leisure and other use environments. Name: Smart bluetooth glasses Frame Material: ABS+PC Lens Material: PC+coating Bluetooth protocol: 5.3 Charging time: about 1H Talk time: about 4-5H Music playback: about 4-5H Standby time: about 50H Battery capacity: 130mAh Sound channel: stereo, dual channel Applicable occasions: gaming/cycling/driving/running/fishing Color: As Shown Material: plastic Package Contents: 1 * Glasses 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.