Color: Black Measuring Head Material: ABS Plastic Cover Body Material: High-Resistance PA66 Plastic Resolution: 0.1mm Accuracy: ±0.2mm Range: 0-150mm/6 inches Measuring Unit: mm/inch Scale Process: Magnetic tape film Battery Model: CR3032 3V Button Battery Package List: 1 x Digital Caliper, 2 x Button Batteries (one pre-installed), 1 x Plastic Box Tips: 1. For household use only (jewelry, gadgets). For industrial use, consider a professional tool. 2. If readings are inaccurate, slide the LCD to the far left (0 on the scale) and press the zero button. Features High-Quality Material: Made of durable carbon fiber plastic, it won't scratch valuables and is safe for all users, including students and children. Lightweight, Portable & Insulating: Lighter and safer than steel, with insulation to protect against electricity. Auto On/Off: Pull out the measuring head to turn on; automatically shuts off after five minutes of inactivity to save power. Extra-Large LCD Screen: Features an acrylic LCD with excellent transparency for clear, instant digital readings. Built-in linear capacitance measuring system chip prevents screen flicker. Accurate Measurement: Digital calipers provide accuracy up to 0.01 inches, perfect for daily and household tasks like measuring screws, jewelry, and DIY projects. Inch/MM Conversion: Easily switch between millimeters and inches with a button press. Zero Button: Calibrate by pressing the zero button anywhere on the scale for differential measurements. Four Measuring Methods: Accurately measures outer diameter, inner diameter, step length, and depth. Note: 1. If the LCD flickers or display is incomplete, the voltage is too low; replace the battery. 2. The LCD screen has a protective film to prevent scratches during transport. Remove it if damaged.