Features: 1. Use high -quality aluminum alloy+ABS, sturdy and durable, anti -collision. 2. Both tape measures and laser are available. The maximum measuring value of the tape measure is 5 meters (16.5 feet), and the maximum laser distance measurement value is 40 meters. 3. Built -in lithium battery, no need to replace the battery frequently, it can be used for a week. 4. One -click ranging, simple operation, accurate ranging. 5, small and light, life -long waterproof and shockproof. 6. Follow measurement, area measurement, volume measurement, edge measurement; Considering your emergency needs, multi -directional measurement without dead ends. Parameters: Product name: 40M laser rangefinder 5M tape ruler system Material: Aluminum Alloy+ABS Color: blue+silver, black+red, black+gold, black+silver Product size: 7.3*7.3*4cm Product weight: 240g Battery: 200mAh Maximum measurement distance: 40M Distance measurement accuracy: 2mm Tape measure: 5M (public and English system) Automatic split laser: 15 seconds Automatic shutdown: 45 seconds Power: USB charge Function: 40 meters laser ranging meter+5 meters tape measure+volume+area Packing list: Laser rangefinder*1 USB data cable*1 Chinese and English manual*1 Tie cable*1