• Audio player : play & pause music / volume up & down / change tracks / 2.0 watt stereo speakers 
  
• Built-in microphone for hands free calling 
• The more visible, the safer : LED indicator (turn signals / emergency lights), reflectors 
• One size (Upper Chest 34" ~ 44" recommended) 
• 5 Colors available : black, green orange, red, camo 
• Small and Large size available in Black and Camo 

AUDIO controller 

• Battery : 3.7 V Li-Polymer, 500mA rechargeable 
• Speaker : 2.0Watt x 2 (Stereo) 
• Bluetooth : V4.1 
• Running time : 5~6 hours, generally 
• Easy bluetooth pairing : turn on audio controller / select "EW90XXX" for pairing / that's it 

LED controller 

• Battery : 3.7 V Li-Polymer, 500mA rechargeable 
• 2.4G Wireless RF with one to one connection 
• Running time : 8~10 hours with continuous use 

Remote controller 

• Battery : 3.0V coin battery 
• Running time : switching signal more than 5000 times