6 months service warrantyImportant Note kindly charge the product laptop or desktop for 4560 min DONT CHARGE MORE THEN THAT IF LIGHT DONT STOP FLASHING AFTER 6090 MIN THAN ALSO REMOVE FROM CHARGE Prefer laptop or desktop mostly you can use electricity mode in emergency START VIDEO AUDIO RECORDING Big button Kindly press on off BUTTON till the time orange light get on Then small button Kindly press on off BUTTON till the time orange light get on flash 3 times AND GET OFF that means recording has started Stop Recording Press SMALL BUTTON 1 time and Quikly leave orange light will get on Power off Big Button Hold on off button for 3 sec orange light will get of then use usb cable and attached laptop or desktopIF YOU ARE UNABLE TO SEE THE VIDEO AND ONLY AUDIO SOUND IS COMING SO PLEASE KINDLY DOWNLOAD THE VLC MEDIA PLAYER TO PLAY THE FILE IF LIGHT DO NOT GET ONOFF KINDLY RESET THAT PRODUCT BY A NEEDLE OR A PINYOU WILL GET THE RESET BUTTON BETWEEN THE USB CABLE SLOT AND THE MEMORY CARD SLOT