Features:100% Brand New High QualityOutput Power: 5mWWavelength: green-532nm red-650nm purple-405nmExpected Life: continuous output andworking time of over 5，000 hoursPower Supply: 2x AAA Batteries(not included)Dimension :15 x 160mmBody Color: BlackLaser Color: Green/ Red/ PurpleBrightness: Green> Red> PurpleCautions: LASER IS NOT SUITABLE FOR CHILDREN， ADULT SUPERVISION RECOMMENDED! KEEP AWAY FROM EYES!!!Friendly Reminder: The green light is not stable if under low temperature. Plese place it in warm condition before using.