Description: 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. Support TF card: You can store songs on the TF card and play them in the TF card slot. 5. 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. 6. 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. Specification: Product features: Bluetooth, TF card, FM, USB, AUX Bluetooth specification: Bluetooth 4.2 Material: ABS, rubber Transmission distance: 10 meters Battery capacity: 500mAh Play time: 3-4H Size: 13.5*6cm Net weight: 280g Package include: 1 x Bluetooth speaker 1 x USB cable