Note: 1. Please allow 1?3cm error due to manual measurement. Thanks for your understanding._x000D_2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard._x000D_3. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Specification: Condition: 100% Brand New_x000D_Item Type: Mini Speaker_x000D_Material: Plastic_x000D_Color: As Pictures Shown _x000D__x000D_Horn: 28 mm/ 1.1 in in Diameter, 4 2 W_x000D_Output Power: RMS 2Wx1_x000D_Frequency Response Range: 80HZ-20KHZ_x000D_SNR: >=80dB_x000D_Battery: 220mAH_x000D_Charging Time: =240 Hours_x000D_Working Time: About 2 Hours_x000D_Charging Interface: Micro USB Interface Features: 1Plug and play, simple plug into 3.5mm audio interface and turn on speaker, no waiting. 2It has a built-in 350mah rechargeable battery, which can play for up to four hours on a single charge and up to four times the normal volume. 3Compact and lightweight, portable and easy to store. 4With a micro usb charge port, it can be rechargeable. 5Compatible with any device with 3.5mm aux audio interface, such as tablet PC, mobile phone, laptop, MP3, MP4, for PSP, carCD etc. PackageList: 1x Speaker1x Date Cable1x Instruction