Watson 4-Hour Rapid Charger with 4 AA NiMH Rechargeable Batteries (2300mAh) Micro-Controller Ensures Full Charging | Individually-Monitored Charging Channels Dual LED Indicators for Charging Status | Automatic Cut-Off: No Overcharging 100-240VAC Worldwide Voltage | Nickel-Metal Hydride Batteries Rechargeable Up to 1000 Times In The Box: 4 x AA NiMH Rechargeable Batteries (2300mAh), Limited 1-Year Manufacturer Warranty