The Sony ACC-TRW Accessory Kit consists of the NP-FW50 battery and the matching BC-TRW battery charger. Ideal when you're on the road and want to photograph and film for longer periods of time. Amongst others suitable for: * RX 10 II * RX10 * A7R II * A7R * A7S II * A7S * A7 * A6000 * A5100 * A5000 * A3000 * XQ1