USB NP-FW50 Dummy Battery AC-PW20 DC Coupler Power Adapter for Sony Alpha 7 a7 a7S a7II a7R A3000 A5000 A6000 NEX5 NEX3 NEX Package includes: 1x PW20 DC Coupler(NP-FW50 dummy battery) 1x USB Cable built-in Voltage Improving PCB. Characteristics： Input: 5 V-2A-4A Output: 8.4 kv Conversion efficiency: 92% (high-efficiency conversion rate) USB Plug Specification: USB2. 0 Length: > 150 cm Replace the camera battery handle or carry more batteries, the camera battery handles will be placed overweight, not photographed. BTX Fotocamera/camera Modelli: per Sony NEX serie 3 (Alpha NEX-, Alpha NEX-3A, Alpha NEX-3C, Alpha NEX-3CA, Alpha NEX-3CD, Alpha NEX-3D, Alpha NEX-3CH, Alpha NEX-3H, Alpha NEX-3CK, Alpha NEX-3K) per Sony NEX serie 5 (Alpha NEX-, Alpha NEX-5A, Alpha NEX-5C, NEX Alpha NEX-5CA, Alpha NEX-5CD, Alpha NEX-5D, Alpha NEX-5H, Alpha NEX-5CH, Alpha NEX-5K) per Sony NEX serie 7 per Sony DSC-RX10, DSCRX10/B WW808143 per Sony α7 (Alpha a7 a7R ILCE7/B ILCE7K/B ILCE7R/B ILCE-7 ILCE-7R) per Sony α7R per Sony α7S per Sony α7II per Sony α3000 per Sony α6000