Feature:1. Pro-environment.2. NO memory effect.3. Recharged up to 1000 times.4. Relatively long service life.5. 100% New Brand and high quality. Specifications:1. Voltage: 1.2V2. Capacity: 400mAh3. Battery Type: AAAA4. Type: Ni-MH Rechargeable5. Weight: 31.9 gApplication :Calculator,Remote Control,Flashlight,Wireless Doorbell,Alarm Clock,Bike Light,Surface Pen,Wireless MousePackage Included:4x EBL 400mAh AAAA Ni-Mh Batteries1x Storage Case