CredDeal 2nd GO Wireless In-ear Stereo Bluetooth Headphones Neckband with Built in Mic Compatible with all Smartphones,Tablet,Mp3,laptops,PC and other Bluetooth Device Wireless bluetooth stereo headphones with streaming audio compatible for all smart mobile phones,PC,laptop,tablets and MP3 players,PS3. Up to 8 hours playing time and 300 hours stand by time will last through all of life's little adventures with you ,within a range up to 30 ft. Behind-the-head design eliminates tangles and provides a light, which is perfected for music on the moving,your daily workout or outdoor adventure. Built-in Microphone design, digital tuning and enhanced bass deliver rich, clear sound so you can hear your music on-the-go. Adopt International Advanced 2.1+EDR Bluetooth Solutions.Ultra light weight ,Only 30g.