tacklife hd50 classic laser measure 164ft m/in/ft mute laser distance meter with 2 bubble levels, backlit lcd and pythagorean mode, measure distance, area and volume - carry pouch and battery included tacklife <b>tacklife - professional team on amazon, which deals only with development of the tools. we commit ourselves to using qualitative tools to improve the quality of life.</b><br><br> <b>main features:</b><br> <b>remarkable accuracy and fast measurement speed</b><br> ●equipped with 2 bubble levels for high accuracy measurement compared to common measure in the market.<br> ●accuracy (m):±0.006ft.<br> ●measuring distance: 164feet.<br> ●laser class ii, <1mw power output.<br><br> <b>reasonable design</b> <br> ●lightweight and very simple, instant, reliable to measure, a tool that get your work done significantly easier.<br> ●laser intensity indication; innovative ergonomic structure design.<br><br> <b>multiple functions and features to improve efficiency.</b><br> ●switchable unit: m/in/ft.<br> ●date storage: 30 groups.<br> ●automatic shutdown:150s.<br> ●self-calibration.<br> ●voice indication.<br> ●cumulative and regressive measurement.<br> ●accumulation and subtraction.<br> ●max&min values measurement.<br> ●auto calculations based on measured length, width and height, no need of manual operation any more.<br><br> <b>note:</b><br> as strong sunlight would weaken laser energy, which might influence the accuracy and measuring range, it’s better to measure backlight, not use outdoors in a sunny day.<br><br> <b>package contents:</b><br> 1×hd50 laser measure 164ft<br> 2×aaa batteries<br> 1×user's manual<br> 1×portable bag<br> 1×hand strap<br> 1×package box<br> 1×24 months service <br>product description