Bluetooth Headset,ZENZITO Wireless Bluetooth Headset Stereo Neckband Headphones Sweatproof Running Gym Exercise Stereo Earphones(Black) Built-in microphone, you could make calls. The material of the headset is in a sweat design,can not under water. Unique comfortable NECK-STRAP design for easy carrying. The flexible, bendable, neckband style ensures a 100% comfortable fit. Universal compatible with standard bluetooth-enabled cellphones, media devices.