Specifications:Light color: PurpleLight Style: kaleidoscopic Wave Length: 405nm Output Power: 5mW Power Supply: 2 x AAAbattery (not included) Material: aluminum Pen color: blackSize: 15.8 x 1.3 x 1.5cmFeatures:--5 different and changeable light patterns in one converter light refraction head with an unchangeable pattern in another.--Rotate the converter head and you can change the pattern of the light.--The light can be used to point at any desired target on projection screen、 video or objects at a distance etc.--It can also be used to create romantic atmosphere or for fun、 presentation、 teaching indicator、 etc.--Pen-sized and lightweight that you can put it your pocket or handbag.--Designed with purple color light、 which is easy for you to find the target and outline the key point.--The battery space is totally sealed that can avoid water into it causing short-circuit.--Anti-slip handle、 which prevents the laser pointer pen from dropping down in your hand.Package include:1 x 5 in 1 Purple Laser Pointer Light Pen1 x Light Converter Head