Check the listing for details. MRT mPTX Direct Powered Personal Transponder. Color: Black, Condition: New. Listed at 76.95 USD. New in package MRT mPTX Direct Powered Transponder This is a MRT Personal Transponder. This is powered off the ESC.Specs:ID Numbers: Main 7 Digit ID / Alternative 7 Digit ID (ALT)System Compatibility: Compatible with AMBrc2, AMBrc3, Mylaps RC3 and Mylaps RC4 systems.**Will Not Work Mylaps RC4 Version 4.5 And Newer**Will not work with decoder boxes updated to 4.5 firmwareStealth Case: 19x16x6mm, waterproof and fuel proofMounting options: 3-hole tabs or direct fit (tabs removed)Weight: 3g approx.Temperature range: 32-122 FahrenheitSignal Transfer: Magnetic induction HD (Hybrid Detection)Power Feed: From free RX channelPower lead length: 190mm or approx 7.5 inchesConnection plug: Standard servo plugOperating Voltage: 2.1v-16v DC (rev. polarity protected)Power consumption: approx 8mA @ 6v DC Vehicle models vary. We DO NOT guarantee this will fit the vehicle specified in this listing!Verify that this item is appropriate for your vehicle. Consult your manual or vehicle manufacturer.Verify vehicle fit-ment before purchase.Returns will only be accepted on items that are returned in new, factory-sealed packaging. Used, damaged (unless damaged when it arrived to you), and opened items will not receive a full refund. Any and all warranty claims will be handled through the manufacturer directly.