1. No battery required, durable 2. Food grade stainless steel, safe and environmentally friendly 3. High accuracy, fast reading 4. High temperature resistant glass, safe to use Temperature range: 10C~76C/40F~180F Main material: 304 stainless steel, glass Temperature accuracy: ±2C / ±4F Dial diameter: 54mm Probe size: Φ5x500mm Application: It can be used to measure the temperature of compost, soil, fertilizer, water temperature, etc.