Silver Bluetooth® Speaker SET with two batteries and power supply, USB/SD slots for MP3 playback and auxiliary input FM radio tuner with 30 station presets and auto scan, operation via BL-5C phone battery (two included) automatic station search, track skip and spool function (forward/backward), built-in equalizer with 6 presets, LCD display with illuminated numbers Bluetooth range: about 10 m, operates with a 3.7V, 800mAh BL-5C mobile phone battery (two included) Stereo speakers, dimensions (W x D x H):. 13 x 30 x 11.9 cm (without handle), 13 x 36 x 11.9 cm (with handle), weight including battery: approximately 900 g