1.Wireless bluetooth remote control comes with built-in high definition microphone, hands-free telephone function support, no need to worry missing your calls when riding.
2.Multi compartments backpack design, suitable for storage clothes, digital accessories, bicycle accessories, foods when bike riding, hiking, mountain climbing, etc.
3.Ultra loud sound amplifier, enjoy your music more clearly.
4.Voice prompt when playing and bluetooth connected, it can read the number of a call for you.
5.5200mAH capacity battery, long playback time and can be used as a power bank for your mobile phones and other digital products.
6.TF card support, enjoy the musics from your card whenever and wherever you like.
7.Dazzle light support, offering you a more safe riding at night.
Specifications:
-Power Bank Output: DC 5V/1A
-Powered By: DC 5V/ 500mA
-Charging Time: 8-10 Hours
-USB Port: Micro USB
-Battery Capacity: 5200mAH
-Bluetooth Version: 2.1+EDR
-Bluetooth Distance: Normal 10m, Max. 20m
-Support Memory Card Type: TF card(Max.32G, mp3/wma/wav files)
-Stereo: 5W x 2
-SNR: >80dB
-AUX Port: 3.5mm
Controller Function:
-Amplifier On/Off Switch: Turn On/Off the amplifier function.
-Play/Pause/Answer/Hang up Button: Short press for Play/Pause, Long press(3s) to switch to TF card/Bluetooth mode, When calls comoing, short press for answer, press again for hold on, long press for hang off directly.
-Next/Volume Up Button: Short press for next song, long press for turn up the volume, when increase to Max, there will be a beep.
-Previous/Volume Down Button: Short press for previous song, long press for turn down the volume.
-Dazzle light Turn On/Off Switch: Turn On/Off the dazzle light.

• This backpack speaker comes with 2 built-in bass resonating stereo subwoofer and multi compartments, ideal for outdoor sports like cycling, hiking, mountain climbing, travel, etc.
• High speed wireless bluetooth 2.1, Aux in and earphone support, perfectly compatible with iPhones, Androids, iPads, Tablets, MP3 players, etc.
• Ergonomic rugged design in the back, features with 360 degree breathable material, relax your pain and massage the muscle.
• Hard EVA material, waterproof, anti-shock and pressure resistant.
• This mp3 boom box is supported by buit-in 5200mAH polymer battery, 8-12 hours long continuously playback time.

This backpack speaker comes with 2 built-in bass resonating stereo subwoofer and multi compartments, ideal for outdoor sports like cycling, hiking, mountain climbing, travel, etc.Sunflower-Fox