Wave Length: 650nm , Size: 80*21mm, big heatsink , long dutycycle, can work 5-6 hours constantly! Item comes with 5V DC adapter and a mount houlder! Line wideness adjustable! Working Voltage: 3.7-5V, PACKING LIST: Red Laser Module*1. 110-240V AC/DC Adapter*1Mount Stand*1 USB-DC Cable*1 (this cable is for connecting 5V USB Power Source, more convenience to use)Attention: This is a Line only, its NOT a CROSS, please dont buy this if you need a corss module! This line module is for positioning ! There is a CROSS module available, its another item, not this one!! you can visit our store front to buy the CORSS one.