FREQUENCY COUNTER, HANDHELD, 3GHZ; Battery Lifetime:20h; Battery Size Code:9V PP3; Digits, No. of:8; External Depth:30mm; External Length / Height:178mm; Frequency Measuring Ranges:3Hz to 125MHz; Max Operating Temperature:40°C; Max Storage Temperature:60°C; Min Storage Temperature:-20°C; Min Temperature Operating:5°C; Weight:190kg; Width, External:81mm