Techno Earth 2 Rechargeable Battery NP-BY1 Car Wall Charger for SONY Action Cam Mini HDR-AZ1 This Techno Earth power kit includes 2 batteries and 1 charger for the Sony NP-BY1 Each Techno Earth battery for the Sony NP-BY1 features Japanese cells, 3.7V, 600mAh Mini rapid AC charger features a fold-out US plug, 110-240V input voltage, car charging adapter, and European plug Batteries and chargers are fully compatible with the Sony original battery and charger Compact convenience for travel