Features: Real-time Ranging: The Mijia Smart Laser Rangefinder can display the current length in real-time, ranging from as close as 5cm to as far as 40m, allowing for confident measurement at any scale. High Precision: The dual-emission single-reception laser head offers data accuracy up to ±3mm, ensuring precise and stable measurements. Smart Linkage: By connecting to your phone via BT and linking to the Mijia APP, it enables data synchronization/notes, length/area/volume calculation, plan drawing, blueprint sharing, and more functions. Simple Operation: The device has only one control button, making the operation simple and straightforward. The high-brightness LCD screen provides a clear view at a glance. Large Capacity Battery: The 370mAh large-capacity lithium battery can measure up to 3000 sets of data when fully charged. The universal Type-c charging interface can share charging cables with mobile phones and other 3C electronic products. Durable Design: The double frosted texture material is scratch-resistant and lightweight, made of aluminum alloy + high-strength engineering plastic. The dual-material design creates a delicate matte appearance. Specification: Dimension: 80×35×21mm Product net weight: about 60g Measuring range: 0.05*-40m Measurement accuracy: ±(3mm+5×10-5D*) Charging parameter: 5∨=1A Battery capacity: 370mAh 3.7V Minimum display unit: 0.001m BT transmission distance: 8m (no obstacle) Package size: 12*8*4cm Package weight: 100g Package list: 1* Laser Measure 1* Charging Cable 1* User Manual