Specification: Product features: Bluetooth, USB Bluetooth specification: Bluetooth4.2 Material: ABS, rubber Transmission distance: 10 meters Battery capacity: 400mAh Play time: 2-3H Size: 8*7*4.CM Net weight: 146g Package include: 1 x bluetooth speaker 1 x USB cable 1 x manual Function: Applicable equipment: Bluetooth 2.1 or above mobile phones, Pad, laptops 1. Bluetooth function: Turn the switch to the location with the Bluetooth logo, activate Bluetooth on the device, click on the connection, you can play it. 2. Wired playback Each speaker is equipped with a charging cable that can be used on the phone 3. Answer the call After the audio and mobile phone Bluetooth match, when the mobile phone calls, press the answer button to answer the call. 4. High quality battery We use a polymer battery, which is safe and has a long life. It can be played continuously for 2 hours when the battery is fully charged. 5. Volume adjustable The volume can be adjusted on the phone, or you can long press the audio plus or minus button to increase or decrease the volume. Light press the plus or minus button to select thesong.