Feature:1. COMPATIBILITY: This dual battery charger is designed for Osmo Action 4, for Action 3 action cameras, providing you with a fast, safe and stable charging experience.2. MULTIPLE CHARGING METHODS: Supports a variety of device charging, including mobile power, car charger, laptop and USB plugs to meet the charging needs of different scenarios.3. LED INDICATOR LIGHT: It features an intelligent LED light. When the indicator light turns green, it means the battery is fully charged, which is convenient for users to know the charging status all the time.4. HIGH EFFICIENCY: The charger can charge two batteries at the same time, and it takes about 70 minutes to charge 2 batteries at 5V 3A. It can also be used as a storage case, convenient to carry.5. PACKAGE CONTENT: This package includes the charger and USB C cable for convenient charging and is easy to operate. Note that batteries are not included in the package.Specification:Item Type: Action Camera Battery ChargerMaterial: Plastics, ElectronicsApplicable Model: For Osmo Action 4 Action 3Input: TYPE C 5V 3AOutput: 4.4V 1.5Ax2.Package List:1 xAction Camera Battery Charger1 x Type C Cable1 x Instruction Manual