The Water Gun Is Battery-Powered And The Battery Is Easily Charged Using The Included Usb Charger. Charge The Battery, Fill The Tank And Start A Fun Water Fight! Size: (L) 19 X (D) 4 X (H) 16 Battery-Powered Water Gun. Rechargeable Battery. (Included.) Tank Holds 100Ml, But You Can Connect An Extra Water Bottle. (Compatible With Various Water Bottles.) Small And Neat - Easy To Handle With One Hand. Play Time: Approx. 20 Mi