1. IntroThank you for purchasing the DOSS SoundBox Wireless Portable Bluetooth Speaker with Bluetooth and Hands free function. We encourage you to read this instruction guide thoroughly to get the most out of this innovative wireless portable speaker.2. Package content• One wireless portable speaker• USB charging cable• Φ3.5mm auxiliary cable• Travel waterproof pouch• User manual, Warranty card, Contact card3. Product Overview1. Mode switch:Touch MODE to toggle play mode among Bluetooth, TF Card and Aux-in connection.2. In Bluetooth mode/TF mode, touch to |<< skip backward.3. Play/Pause and handset button• In Bluetooth mode, touch  to answer or end a call. Touch for 3 seconds to reject a call.• In Bluetooth mode, touch to play/pause your tune. Touch for 3 seconds to disconnect with your device.• In TF mode, touch to play/pause your tune.4. In Bluetooth mode/TF mode, touch to skip forward.5. Volume control:• Clockwise rotation to increase the volume.• Counterclockwise rotation to decrease the volume.6. Power button:Long press to turn the device on and off.7. Auxiliary Φ3.5mm jack: Use it for cabled playback with compatibledevices.8. TF card:Use it for TF card (with music) playback.9. Charging port:Plug the supplied USB cable into this port to rechargethe built-in battery.10. LED charging indicator.• Charging: Steady Red.• Fully charged: Steady GreenStatus Indicator Lights