See Me Here - BV350 Sports Outdoor Portable Bluetooth Speakers - With 6W Driver Hook Included (Green) Bluetooth wireless speaker, Support 32GB TF Card, Particularly suitable for Outdoor Sports; Spport MP3/WMA/WAV/FLAC/APE audio formats 360 Degrees full Sound;Single finger control volume design for safe riding,2.0 inch input 3W*2 speakers + bass radiator Bluetooth range about 30 feet;Bluetooth 2.1 + EDR; Support hands-free calls Built-in Bluetooth Technology,with a battery indicator, charging with LED display, low-frequency output transmitter Power supply with max up to 1500mAh,6~8 hours playtime with medium volume,ONE YEAR FACTORY WARRANTY