The transmitter fits into the Docking Station and will recharge when the microphone has NiMH rechargeable batteries installed in its battery compartment. It has approximately 12 hours of talk time when it is fully charged. The microphone has a programmable slide switch (on/off/mute) and an OLED display to show transmitter related information. This microphone has the option to power through micro-USB port as an additional way of charging.This transmitter has an RF power of 1 or 10 mW. This transmitter canl be configured and firmware field-upgraded using Software through Wireless Receiver. We guarantee against items being DOA (Dead on Arrival) unless otherwise noted by (AS-IS) in the description of the item. We take pride in our descriptions and pictures. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Microphones & Wireless Systems". The seller is "sourceinfo1" and is located in this country: US. This item can be shipped worldwide.