Product material: aluminium alloy and ABS Product color: grey Product size: 5.6*2.2*1.3cm Color box size: 10.4*4.3*2.8cm Product net weight: 24g Product large weight: 50g Measurement accuracy: 2.0mm+5x D Range: 0.03~25 meters Measurement date: front/rear date Measurement unit: m/ft/in Laser type: Class2, 630~670nm, <1mW Working temperature: 0 ~40 Battery type: 3.7V 250mAh polymer lithium battery (built-in lithium battery shipped) Charging interface: Micro USB Number of buttons: 3 Function description: continuous measurement, area, volume, Pythagorean measurement Electronic angle: optional 1.High-precision one-piece molding process, polishing and sandblasting, comfortable hand feeling. Powerful, you can test words, you can test multiple times, and you can test angles. 3.Small and lightweight, with a weight of 24g, there is no burden on the hand. 4. High measurement accuracy, durable and strong battery life. 5. It has a wide range of applications. You can think of it and use it whenever you need to measure, such as house decoration measurement, infrastructure measurement, etc. Package List: manual Tips: 1. Please do not look directly into the beam. 2. Please keep it out of the reach of children. 3. Do not use the instrument in flammable and explosive environments. Do not use this instrument near medical equipment or in the air. 5.The instrument parts must be kept clean at all times, please close them before cleaning. When there is dust on the laser transmitting port and receiving lens, use a soft cloth with clean water or a neutral screen cleaner, and then wipe. Do not use acidic or alkaline detergents for cleaning; also, do not use alcohol or other solvents for cleaning 6.The meter is not waterproof and cannot be wetted or placed in water