[Advanced Technology & Stereo Sound] GGMM Wireless Sports Bluetooth Headphones are equipped with Bluetooth 4.1 CSR technology offering you perfect stereo sound. CVC noise Isolation technology reduces outside noises enable clearer music and microphone sound. Operating distance up to 33ft in open space.</br> [Comfort & Secure Fit Design] 360? flexibility free Soft ear hook can be adjusted to any shape to perfectly fit your ears. package included S/M/L custom silicone ear tips and 3 pairs earbud locks ensure a comfortable and secure fit for everyone. Portable and lightweight wireless headset can be stay in your ears comfortably. Neckband design prevents troublesome wires from tangling during your workout.</br> [Sweatproof & Active Lifestyle] GGMM W710 Sports Earbuds are rated IPX Level 4 and can withstand dripping sweat. Ergonomic design optimized for ultimate wearing comfort to match your active lifestyle like running jogging cycling driving camping hiking gym exercise and other indoor or outdoor activity.</br>? [Long Playtime & In-Line Remote Control] Up to 7 hours talk/ play time and 180 hours standby time (full charge in 1-2 hr);Voice Prompt function e