1. 【Ultra-long Distance - 99 Meters】: It has millimeter-level accuracy, with an error of ±0.5%. It supports continuous adjustment, which is more convenient and accurate. It is suitable for linear measurement, arc measurement, arbitrary curve measurement, irregular surface measurement, and cylindrical diameter measurement in daily life and work. 2. 【Long Battery Life】: It is equipped with a built - in 200mAh low - internal - resistance polymer lithium battery. After being fully charged, it can achieve an ultra - long standby time of up to 200 days. A 5 - minute charge is enough for 2 hours of use. 3. 【High - quality Materials】: This product is made of high - quality aluminum alloy, high - hardness organic glass, and ABS materials. It is resistant to breakage, scratching, and impact, more durable, and has a longer service life. The body is slim and easy to carry. 4. 【Wide Application Range】: It is suitable for linear measurement, arc measurement, arbitrary curve measurement, concave - convex surface measurement, and cylindrical diameter measurement.