IP4955B Features Excellent slim appearance Widely applicable with cell phones， laptop PCs， tablet PCs and other Bluetooth enabled devices  Superb bass stereo sound effect for music play Supports Bluetooth V3.0 technology Supports hands-free call Supports an external TF card and USB flash drive Stunning LED light effect Compact size for ease of carrying General Specs Brand & Model S07U  Type Bluetooth speaker Color Black Bluetooth Version V3.0 Bluetooth Profile A2DP， AVRCP， Headset， Handsfree Operating Range Up to 10 m Working Time 5 hours Frequency Response 280Hz-16kHz Speaker  45 mm  Loudspeaker Output 3W Signal/Noise ≥ 95 dB Distortion ≤ 0.5% Battery 520 mAh Charging Time 2 hours Charging Voltage 5 ± 0.5V Compatibility Cell phones， laptop PCs， tablet PCs and other Bluetooth enabled devices   Dimensions 60 x 60 x 50 mm Package Details Weight: 234.33 g Size: 7.8*6.2*6.2 cm