1.use for Nikon EL4a/EN-EL3E 2.AC100-240V(50-60Hz) 3.12.6V 1.0A/8.4V 1.0A 4.charging fast and steady 5.convenient. use for Nikon EL4a/EN-EL3EMK-MH21EN-EL4a,EN-EL3eapply to camera-EN-EL4aD3,D3S,D300,D300S,D700EN-EL3eD80,D90,D300,D300S,D700AC100-240V(50-60Hz)12.6V 1.0A/8.4V 1.0A charging fast and steadyconvenient. digital camera charging