They run on AA batteries and are shown powered up and in good working condition. Please study the photographs and description for items included in the sale. If an accessory is not pictured or mentioned in the text it will not be included. Leaving feedback, I will do my best to help as quickly as possible. International Buyers (Outside the UK/Eu) Please Note._gsrx_vers_841 GS 7.0.16 (841). The item "Sennheiser Transmitter Receiver E100 G3 Kit EK100-G3, SK100-G3, 606-648Mhz" is in sale since Thursday, December 5, 2019. This item is in the category "Musical Instruments\Pro Audio Equipment\Microphones". The seller is "secondhandandbranded" and is located in Epsom. This item can be shipped worldwide.