1.One-key ranging, high-definition digital display: laser ranging, error 2mm.2. abs rubber-coated shell design, tough and wear-resistant, dust-proof design, .3. Coated manganese steel tape: two scales (inch scale, metric scale).4. The maximum continuous 20 groups of data storage, easy to read.Hook and rope design, easy to carry.5. Self-locking device of ruler belt,automatically lock the current measurement position after the ruler belt is pulled out, and press the unlock button to automatically,which is safe and does not hurt hands.Colour:blackMaterial:absPackage Contents:1 x laser tape measure1 x usb charging cableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.