How to use 1. The design is unique, easy to carry and operate. 2. Applicable to different country notes. 3. Voltage: 100-240V 50 / 60HZ 4. Charged by charger or 4xAA battery(Not included when shipping). 5. Power: 2W 6. Counting range: 1-999 pcs 7. Counting speed: 600 pcs/min