Features:*Supports phone/ laptop/ Tablet PC*Supports TF Card/ USB/ Audio Input*Modular buddy-jack'design: connect a row of mini speakers to get jawdraopping audio performance*Expanded bxs (Bass Expansion system) drives a fuller、 richer low-end response*New、 larger 45mm driver delivers precise high for superb sound*Built-in Microphone*Bluetooth Function*Handsfree Call Feature*Built in Rechargeable Lithium Battery*Audio Devices with 3.5mm Stereo Jack input*Bluetooth Function Specifications:*Interface: USB + 3.5 mm audio interface + TF card Slot*Bluetooth version: V3.0 + LDR*The output power: 3W*1*Operation Range: up to 10m*Input: DC 5V 500mA*Frequency Response range: 100hz~20KHz*SNR: >=84dBSensitivity: 80 db + 2 dbPackage Inculded:1 * Bluetooth Speaker