Power Kit NP-FW50 + Professional Cleaning Kit for Sony NEX-3 | NEX-3A | NEX-3D | NEX-3K | NEX-5 | NEX-5A | NEX-5D | NEX-5H | NEX-5K | NEX 6 | NEX-7 | Sony Alpha 33 (SLT-A33) | 37 (SLT-A37) | 55 (SLT-A55) (Electronics)
Batteries rather effective. Fast loading and capacity comparable to the original. Recognized by Sony with A7R good indication of charge level. Furthermore, the kit is very complete, all at an unbeatable price. Excellent value for money.