•Premium Material: It is made of quality material,durable and high-strength,not easy to break •Indicator Light: Each charging dock has 5 LED indicator lights to let you know the charging status •Easy to Use: Start charging once put into the slot,easy to use •Can Charge Phone: With one USB port and one Type-C port for charging cellphones and other devices •Ensuring Safety: Built-in multiple protections,such as overheat protection,overvoltage protection,overcurrent and short circuit protection,please rest assured of security •Convenient Design: One-button power switch on the base to conveniently cut off/on the power Specification: •Input voltage: DC 12V •Input current: 4A •Output voltage: DC 4.2V •Output current: 0.5A •USB port/Type-C: 5V/9V/12V •Size: 360*214*65mm •Weight: 2kg •AC and DC adapter cable length: 150cm/59.06in Compatible with: •Retevis RT22/RT622/RT22S/RT22MX •Retevis RB19/RB619/RB19P (a little loose) •Retevis RB39/RB639/RB39P/RB639P (The opposite of RT22 positive and negative poles) Package included: •1 x RTC22T 10-unit Charger •1 x AC Adapter •1 x DC Adapter •1 x English User Manual •Other things not included