Great Tool Measure Help With Perfect LaserIf you are not satisfied with your purchase, simply contact us via eCRATER message and your interests will be protected. Please don't open a dispute or leave neutral/negative feedback without communication. Thanks. Features:100% Brand New. High Quality New Laser Level Horizon Vertical Measure Tape 8FT Aligner Hang shelves and cabinets, tiles and picture frames with accuracy Projects horizontal or vertical laser light beam Locking 8-foot measuring tape. Standard and metric rulers Ideal For Any Job That Requires A Straight Line Or Accurate Measurement. Use this Multipurpose Laser Level for hanging pictures, installing shelving, laying flooring, hanging wallpaper and more. Laser light has an on/off power switch. Laser max output: less than 0.5mW Powered by 3*AG13 button cell battery keep the laser level away from water ,dust and sunlight Specifications: Wavelength:650nm Output Power:5mW Size : 18.5 (L) x 6.2(W) x 2.8 (H) cm Packaging size: 210*80*40mm Color : Black Net weight: 184g Package weight: 199g Original box: NO Packet content: 1 x Great Tool Measure Help With Perfect Laser3 x AG 13 Button-Cells