These instructions are for your safety. Please read through them thoroughly before use and retain for future reference.

WARNING

• The device is not water-proof, please against any liquid so that well protect the  device.
  
• Please keep it out of small children reach, and stock against humidity and hot temperature.
• Please remove the electronic parts from the helmet when the device would be detached.
• Please do not disassembled, amend or alter device alone, and do not throw and drop it.
• No naked flame sources, such as lighted candles, should be placed on the apparatus.
• Please make sure the charging time is about 2 hours at the same time.