1.Plastic case
2.Splashproof(IPX4)
3.Support TWS(True Wireless Stereo) (optional)
4.Built in 1200mAh battery
5.Built-in MIC, with handfree(phone) function
6.Built-in MP3 player, could play mp3 from TF card and U disk
7.With double passive radiator, bass enhanced
8.With Portable strap