Wave Hobby Tool Series USB Rechargeable Cordless Circular Saw Plastic Model Tool HT204

---------------------------------------------------------------------- Body size: Total length approximately 11cm, weight approximately 155g 4 replacement cutting wheels and dedicated USB charging cable included Continuous use time: 15 minutes (recommended) *After using for 15 minutes continuously, we recommend taking a break for about 10 minutes before using. Due to specifications, this product cannot be used while charging. Built-in: Lithium polymer rechargeable battery (3.7V 700mAh) Power supply DC 5.0V (supplied from USB port) Charging time: Approximately 1 hour, total operating time: Approximately 1 hour (no load/full charge) Battery type: Lithium polymer