1Support inserting memory card and USB to play music, more convenient and faster. 2Streamlined design, cooling and reducing resistance. With FM radio function. 3Equipped with a remoter (builtin battery), the operation is more convenient. 4Waterproof, dustproof, and antitheft function, it is the best choice for motorcycle accessories. 5With AUX socket, you can play music saved in the phone by connecting the audio cable. Item Type: Motorcycle MP3 Player Material: ABS Output Power: 2 x 7W Battery Type: Built-in button battery (Remoter) Battery Model: CR2025 Battery Capacity: 150mAh Wiring Instructions:Red wire to positive Black wire to negative Operations 1. Glitter the indicator will keep on and glitter when playing MP3 2. Memory card socket Insert a Memory card to automatically play songs in corresponding formats. 3. Aux-in socket Used to input external audio signal. 4. USB socket Read information on USB via a USB extension cable. Insert a USB to automatically play songs in corresponding formats. 5. Remoter indicator When the remoter sends signal, the indicator will flicker once. 6. Alarm/Power-off After connecting to power supply, press this button once to turn on the alarm (ring for once); press this button once again to turn the alarm off(ring for twice). In radio state, press and hold this button to power the device off. 7. Power-on/Pause/Mode 1) After connecting to power supply, press this button to power it on. 2) In radio state, press this button to close audio output; press this button again to restore the original volume level. 3) In MP3 playing state, press this button to pause; press this button again to cancel the pause function. 4) In any state, press and hold this button to switch modes in order (TF-RADIO-AUX-USB) 8. Previous/Search previous station/Vol- 1) In radio state, press this button to search the previous station semiautomatically; press and hold this button to decrease volume level. 2) In MP3 playing state, press this button to select theQrevious song; press and hold this button to decrease volume level. 9. Next/Search next station/Vol+ 1) In radio state, press this button to search the next station semiautomatically; press and hold this button to increase volume level. 2) In MP3 playing state, press this button to select the next song; press and hold this button to increase volume level. 2 x Player 1 x Remoter 2 x Bracket 8 x Screw 1 x Manual Due to manual measurement, please allow errors.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.