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Description: Modular partner jack design allows it to connect a row of mini speakers to get unexpected audio performance. The new Lager 45mm driver provides precise treble to produce outstanding sound. Because of high capacity battery, it can use a longer time and doesn't worry about low battery. Excellent heavy bass diaphragm and CVC noise reduction technology bring you better music quality. The extended BXS can drive a more complete and richer low-end response. The case is made of plastic, which makes it durable. The diameter is 5.2cm and the height is 5.5cm. It supports mobile phone, laptop, tablet, A2DP, AVRCP, headset, hands-free, profile, TF card, USB, FM, Bluetooth. Item Name: bluetooth-compatible Speaker Material:Plastic Charging Time: about 2 Hours Output Power: 3W Battery Capacity: 300mAh (Included) Playback Time: about 1 Hour Frequency Range: 280Hz - 16KHz Transmission Distance: 10m Bluetooth Version: 3.0 Signal to Noise Ratio: > = 95dB Distortion: