Description: Functions: Stereoscopic high-definition sound enters your ears, listen to WeChat voice, listen to books and learn, silently. Technology and fashion make your wearing experience pleasing and pleasing. Hands Free: Convenient operation, start and stop more freely: cutting, adjusting the volume, no mobile phone operation, just tap the temple button to complete the operation, it's that simple. Upgrade the Bluetooth chip, faster and more stable: automatically connect after booting, excellent sound quality, stable compatibility, and stable connection. Professional, waterproof and sweatproof: with precision craftsmanship, it has waterproof performance, reaching ip67 level, effectively preventing the splash of domestic water, Han water, and short-term soaking. Plenty of power and longer battery life: It comes with a large-capacity dual battery 220mAh, standby for about 7 days, and charging for about 2 hours. Size Chart: 142.7x51.4x166.7mm/5.62x2.02x6.56inch Package Includes: 1 Piece Glasses 1 Piece Glasses leather case 1 Piece Charging cable 1 Piece Flocking glasses cloth