This sound level meter is made of sturdy plastic, designed for long-term use. It's suitable for outdoor noise measurement. Compact and lightweight, it's easy to carry for on-the-go use. Color: as shown Material: Plastic Size: 14.50X5.00X2.50cm/5.70X1.97X0.98in Battery: 3 × AAA batteries (Included) Frequency response: 31.5Hz-8KHz Measuring ranges: 30-130dB Accuracy: ±1dB (94dB@1KHz) Display resolution: 0.1dB Operating temperature: 0-40 degree centigrade Operating humidity: 10-90%RH Storage temperature: -10 to 60 degree centigrade Storage humidity: 10-75%RH Features: High accuracy with 0.1dB resolution ensures precise results. Large screen display for easy reading. Portable and lightweight design ideal for outdoor use. Versatile for environmental noise monitoring, industrial noise control, and more. Durable plastic construction resists deformation and breakage, offering a long lifespan. Package list: 1 x decibel meter