Material: ABS Power Supply: 2 x AAA Batteries (Batteries Not Included) Weight: Approx. 157g / 5.5oz Size: Approx. 60x160x25mm / 2.4x6.3x1.0in Package Checklist: 1 x Lux Meter (Battery Not Included) Features: Made of high quality ABS material, durable, wear-resistant and can be used for a long time. With a data display screen, the reading is accurate and clear, the response is sensitive and the operation is convenient. Wide measuring range, with speed measuring device, low power consumption and long service life. Professional high-precision measuring and testing tools, with maximum and minimum reading hold function, automatic measurement function. The method is simple and suitable for schools, workplaces and various visible light environments. 1. An illuminometer (or meter) is a special instrument for measuring illuminance. 2. Photosensitive probe cover: It can prevent the probe from being damaged and has a good protective effect. 3. Customized flip battery slot: Power battery (not included), the instrument has automatic shutdown function, long-term use, energy saving and environmental protection. 4. Backlit display: LED backlit large-screen assembly, accurate and convenient reading. 5. Soft keys: Rubber material, comfortable hand feeling, easy to use for a long time.Good quality product