1.Three Charging Way:For NB7L battery charger built with a double-sided plug USB cable (34.5 cm length) and Type-C port input Power your camera batteries with good charging efficiency.USB port output could as a power bank to charge your phones in an emergency 2.Multi-Function Battery Charger Case:Four-in-one charger is NP-FW50 battery charger, (1) could be used as a camera storage case to store 2 batteries, (2) and is 2 SD card storage cases. (3)have a phone power bank function. (4)Can be used as a card reader to read camera memory card information. 3.Switch button for NB-7L charger:The switch button has 2 functions, (you need to press the switch once for the output function; when it is used as a storage box, you need to press the button to turn off the power 4.Multiple Protection:The LCD charger case huge your batteries and SD cards firmly while in storage or traveling, keeps dust, debris out of your replacement battery, premium quality charger set with overcharging, short circuit