This DIY frequency counter is widely used for testing frequency with very high accuracy. Wide frequency measurement range: 1~500 MHz, 100Hz resolution. 0802 LCD display with backlight and the backlight color is generally yellow-green. Features: Higher reliability and durable quality. Wide range: 1~500 MHz, 100Hz resolution. 0802 LCD display, low-power consumption. Standard interface for easy connections with other tests or antennas. Input is via an SMA jack (female). Specifications: Color: Dark Green Material: PCB + FR4 Power Mode: 9V Battery (Not Included) Display: 38 * 16mm LCD Display Frequency Range: 1~500 MHz, 100Hz resolution Item Size: 60 * 33 * 26.5mm / 2.36 * 1.30 * 1.04in Item Weight: 42g / 1.49oz Package Size: 11 * 6 * 3cm / 5.91 * 4.72 * 1.18in Package Weight: 43g / 1.53oz