Feature:1. Replacement Option: Highly reproduced the original for IOS Earbuds 1st 2nd Gen charging case in both appearance and function, it is an ideal replacement option.2. With Pairing Sync Button: This wireless charging case has a Bluetooth pairing sync button and allows you to monitor the battery level of the charging case and earphones by connecting your phone.3. Large Capacity Battery: The earbuds charging case has built in 550mAh battery that can be fully charged in 2 hours and can fully charge your earbuds up to 5 times.4. Fast Charging: Earphones charging case supports fast charging, which can support 3 hours of listening in 20 minutes of charging. Compact and portable.5. 2 Charging Methods: The earphones charger case supports wireless and wired charging, convenient and fast. It also supports for IOS interface cable charging.Specification:Item Type: Earbuds Charging CaseMaterial: Plastic, ElectronicsModel: D02Input: 5V0.3AWireless Input: 5V0.5ASupport Replacement Model: For IOS Earbuds 1st 2nd Gen Charging CaseCharging Method of Charging Case: Wired Charging Or Wireless ChargingBattery Type: Built in 550mAh Lithium Polymer Battery (Included).Package List:1 xEarbuds Charging Case1 x Instruction Manual