1. Weight: about 27 grams
2. Size: about 6x3.5 cm, the length of the rope is about 43 cm
3. Material: Plastic
4. Count: 0-9999
5. Features: unique shape, beautiful and practical, exquisite and small, with sound, big screen to see clearly, with lanyard, easy to carry and use, versatile, durable
6. How to use: long press the top blue button for 5 seconds to clear, then long press for 5 seconds to shut down, long press the plus and minus keys for 5 seconds to turn on or off the sound
7. Power supply: comes with 1 button battery, replaceable