Power: 3W,Power source: AA Battery,Net weight:53g,Size:13*2.5cm. Safety Warning: Do not insert the device further into your nostril or an ear hole than the narrow tip on the outer blade Also, do not press the trimmer forcefully into your nostril, or ear hole. Do not attempt to use the device if the outer blade frame or blade are deformed or damaged, as injury to your nostril or ear hole may occur. This trimmer is designed only for cutting nose or ear hairs. Do not attempt to use it for any other purpose. The blades have been precision manufactured.do not subject them to excessive force, impact, etc. If used once a week for approx. Package includes 1*Machine,1*Shaver head,1*Eyebrow and ear hair trimmer,1*Sideburns trimmer,1*Base,1*Manual.