Specification: Item Type: Bluetooth Speaker_x000D_Material: MDF_x000D_Frequency Range: 90Hz-18KHz_x000D_Impedance: 4_x000D_Bluetooth Protocol: 5.0_x000D_Built in Polymer Lithium Battery: 7200mAh (included) Features: 1[Clear Sound] Equipped with two 76mm / 3in speakers, it can cover a range of 300indoor, with clear and thick sound without noise, and easily control all kinds of music. 2[MDF Material] Medium density fiberboard effectively eliminates bad resonance. The workmanship is meticulous, and every detail is carefully polished to ensure high quality life enjoyment. 3[Stable Transmission and Connection] 0?10m / 0?33ft effective Bluetooth connection, Bluetooth 5.0 version, more stable transmission, intelligent fast connection, support for voice calls. 4[Playback Mode] Bluetooth, AUX, and memory card playback can be freely selected to meet the needs of multi scene playback, and enjoy good music anytime, anywhere. 5[With Lithium Battery] Built in 7200mAh lithium battery (included), low energy consumption, stable performance and can also be used while charging (common for charging head and mobile phone). 6[Wide Compatibility] Compatible with Bluetooth devices such as phones, tablets, computers, etc., easy wireless connection and compatible with for Windows, for iOS, for Android and other systems. PackageList: 1 x Speaker 1 x Charging Cable 1 x Cable 1 x Manual