Small and Lightweight: This digital handheld counter measures 6.6 x 3.5 x 2cm and weighs about 20g, which is small and light, so you can carry it in your pocket so you can start counting at any time. There is a lanyard on it, so you can hang it around your neck or wrist, which is convenient to use and prevents loss. Durable Quality: The high-quality ABS plastic shell of this counter is wear-resistant, drop-resistant, and not easy to break, with high durability. It is powered by an LR44 button battery (included), which can provide more than 250 hours of lasting power and can be used for a long time without replacing the battery. Simple Operation: Press the On/Off button to turn the clicker on/off. When the counter is on, the screen will display "0". When counting, press the "+" button to add numbers one by one, and press the "-" button to subtract numbers. If you want to reset the number to zero, you can long press the On/Off button until the screen displays 0. Clear and Accurate: This electronic manual clicker has a 4-digit LCD display that can display numbers from 0 to 9999 (negative numbers are not displayed). You can calculate numbers between 0-9999. When you add or subtract a number, the LCD screen will display it clearly and accurately, without worrying about calculating the wrong number.