Wireless and Wired Playing:
Supports wirelessly playing music via BT connection; also supports AUX IN and TF card music playback.
Perfect Music Enjoyment:
5W 72mm large stereo loudspeaker, bright treble, deep bass, bring you perfect music effect and high quality loud sound.
Hands-free with Mic:
Built-in high-grade microphone enables you to receive calls and makes your hands free when driving, cycling, hiking, etc.
IP67 waterproof speaker with flashlight function (strong light, week light and quick flashing light) makes it fit for outdoor activities.
Built-in 4000mAh rechargeable battery ensures about 10 hours of working time. S11 can also be used as a power bank to charge your mobile devices.
Note: No fear of rain drops but it can't be immersed into water.