Wireless Speakers, GranVela Mrice Campers Portable Bluetooth speaker Micro SD Card Player for outdoors, Hi-defination , Super Bass, dust-proof,shock-proof and water-resistant,with Bulit-in Microphone (Silver 1. Designed specially for sports and outdoors, with a belt for easily fastening. 2. Switch easily between music and call with just one touch. 3. Playtime up to 6 hours with rechargeable battery. 4. Built with 3W speaker and supporting A2DP, streaming powerful and crisp sound. [Portable] With The Handle Made Of Fine Steel , It Can Be Hung Or Used As A Handlebar. Up To 6 Hours Continuously Playing Time At 70% Of The Maximum Volume.