Main Features:- Bathing and showering will never be boring ever again! IPX4 water resistant makes you share your music and streaming audio when shower.- Built-in microphone for hands-free calls・ free your hand and keep your safety in driving.- Advanced Bluetooth V2.1 + EDR technology・ automatically pairs your device with the speaker when in range of speaker (super connection range up to 10 meters).- Features TF card slot to play MP3 files music・ TF card up to 16GB.- AUX function: Connect any non-Bluetooth devices via 3.5mm audio port・ offers maximum compatibility.- Built-in 500mAh rechargeable lithium battery lasts up to 4 hours・ great for outdoor activities.- Hanging ring design・ ideal for outing and carrying.