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 SpeakerMaterial:PlasticCharging Time: about 2 HoursOutput Power: 3WBattery Capacity: 300mAh (Included)Playback Time: about 1 HourFrequency Range: 280Hz - 16KHzTransmission Distance: 10mBluetooth Version: 3.0Signal to Noise Ratio: > = 95dBDistortion: Power Input: DC 5VSpeaker Diameter: Φ52mmUSB Flash Drive: Size Details:Diameter: 5.2cm/2.05", Height: 5.5cm/2.17" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 X bluetooth-compatible Speaker