This is a used item that has been used several times. It has a buzzer function, but it is damaged and does not produce sound. The alligator clip covers are mismatched, with one red and three black. There are no instructions. Multimeter Size: 12.5cm x 7cm x 2.5cm Maximum display: 1999 DC Voltage (DCV): 200mV / 2000mV / 20V / 200V / 1000V AC Voltage (ACV): 200V / 750V DC Current (DCA): 2000uA / 20mA / 200mA / 10A Resistance (Ω): 200Ω / 2000Ω / 20kΩ / 200kΩ / 2000kΩ Transistor: NPN, PNP Battery: 9V 006P/6F22 square battery The battery is already installed, so you can use it as soon as you receive the product. Since it has been used several times, the battery may run out quickly, but please replace the battery when this happens. This is a digital multimeter that fits in the palm of your hand and can be put in your pocket. It can be used for various purposes, such as measuring DC/AC voltage, DC current, and resistance, as well as checking diodes and transistors. It is a useful item for various situations, such as maintaining electrical systems in cars and motorcycles, adding optional parts, repairing home appliances, checking solar panels and wiring in DIY projects, and checking if dry cell batteries are still usable. ※ Caution ※ Do not switch the dial while the lead probes are connected and current is flowing. Turning the dial while the lead probes are connected will damage the multimeter. When changing the dial setting, be sure to disconnect the lead probes before use.