Note: 1.Before first use please tear off the plastic insulating material on the battery. 2.If FM can't work,please plug in Micro USB cable to strengthen the signal receiving. 3.Chinese and English voice prompt switch,please touch the M button for more than 3 seconds. 4.Without Hands-free call function. 5.This items have AUX and Bluetooth Mode, please kindly to change the mode before you connect the Bluetooth (Confirm the Mode is Bluetooth mode before connected) Feature Supports wireless music streaming via Bluetooth V3.0 technology. With the digital display, light sense touch buttons and NFC function. Can be inserted U disk and TF card ( Max to 32GB, TF card not included ) , plays MP3 format music, with memory function. With FM radio, can automatically search and store channels. Tumbler design more protective more safe and funny design. 3.5mm audio output / input, but also for computer, MP3 / MP4 / mobile. You can select a song forward and reverse. Note: 1.Before first use please tear off the plastic insulating material on the battery. 2.If FM can't work,please plug in Micro USB cable to strengthen the signal receiving. 3.Chinese and English voice prompt switch,please touch the M button for more than 3 seconds. 4.Without Hands-free call function. Specification: Model: KR-8800 Compatible with: iPhone,iPod,Laptop,Mobile phone,MP3,MP4,MP5,PC,Tablet PC,TF/Micro SD Card Supports: Bluetooth,FM,LCD Screen,LED Shinning,Loudspeaker,NFC,TF Card Music Playing,Volume Control Functions: AUX Function,Songs Track,Stereo Connection: Wireless Interface: 3.5mm Audio,Micro USB,Power Charge Port,TF Card Slot,USB2.0 Audio Source: Bluetooth Enabled Devices,Electronic Products with 3.5mm Plug,Electronic Products with USB port,TF/Micro SD Card,U-disk Material: Plastic Color: Black Bluetooth version: V3.0 Audio File Format: MP3 Transmission Distance: W/O obstacles 10m Speaker Impedance: 4 ohm Power Output: 2 x 3W Freq: 40HZ-20KHZ S/N: 85dB FM Radio Frequency: 87.6 - 108MHz Charging Voltage: DC5V / 1A Charging time: 5 - 6 hours Lasting Time: 4 - 5 hours Battery Capacity: 1200mAh Array Package weight: 0.678 kg Product size (L x W x H): 23.00 x 6.50 x 6.50 cm / 9.06 x 2.56 x 2.56 inches Package size (L x W x H): 26.00 x 8.00 x 7.50 cm / 10.24 x 3.15 x 2.95 inches. Package Contents: 1 x KR-8800 Wireless Bluetooth V3.0 LED Display Speaker with Light Sensitive Touch NFC FM Radio Support External USB TF Card Playing for Smart Phone PC 1 x Audio Cable, 1 x USB Cable, 1 x Rechargeable Battery, 1 x English User Manual