Shell material: aluminum alloy + silicone<br>Shell process: fine polishing + matte sandblasting<br>Screen: 1.8-inch VA LCD screen (white characters on black background)<br>Screen cover: 4H ultra-hard plexiglass<br>Size: 53*15mm (diameter + thickness)<br>Net weight: 35g<br>Single distance measurement: up to 9.99 meters<br>Cumulative ranging: up to 99.99 meters<br>Accuracy: ±0.5%, support stepless adjustment<br>Backlight time: 30-180 seconds<br>Buzzer: On/Off<br>Battery: 200mAh 0.74wh<br>Charging port: Type-C<br>Electronic ruler arc black technology equipment 8 functions I ultra-thin portable high-definition LCD screen I super long battery life<br>Black technology equipment life and work all-rounder<br>Combining up to 10 practical functions such as straight line measurement, arc measurement, arbitrary curve measurement, irregular surface measurement, cylinder diameter measurement, etc., 10 sets of accumulation/decrement history records. Measurement prompt sound, measurement volume breathing light, unit switching, etc.: Easily cover your various measurement needs.<br>telemetry<br>Practical single-time 0-99m distance measurement, ultra-long-distance measurement up to 99m (automatic accumulation), millimeter-level accuracy, automatic accumulation of measurement data, 10 sets of historical records can be called at any time, convenient and practical.<br>Minimalist Seiko texture Lightweight and portable<br>15mm ultra-thin body, 30g light weight, which is 1/3 of the volume and 1/4 of the weight of a steel tape measure, convenient for you to carry and measure at any time.<br>The life of core components is extended r100000 times<br>Ultra-low power microprocessor for long standby and battery life. Imported TDK inductors, capacitors, low-inertia high-precision digital encoders are used to assist metal casings and high-precision nylon gears to assist high-precision CNC machining, with long service life.<br>Battery direct charging 200 days long standby time<br>Equipped with a 200mA low internal resistance polymer battery, it has a battery life of 3000 meters on a full charge and a super long standby time of 200 days. Type-C high compatible interface, charging for 5 minutes, battery life for 2 hours, giving you ultra-low cost of use.<br>Changeable measurement application scenarios<br>Flat, curved, irregular, circular diameter, soft objects can be measured, covering all aspects of your life and work. Make it easy to use, convenient and efficient. HG