-2.4GHz MX-F Multi controller -Dimensions: 150.0 x 84.5 x 61.0mm -Weight: 145.5g (not included battery) -Battery: Dry battery AAA x4(Separate sales) -Current:less than 50mA -Continual use time: 17 hours ( It will be different by each situation.) -Number of channels: 8 Stick operation x4 + Switch operation x4 -Frequency: 2.4GHz -Compatible receiver: MR-8 *Can not use an FHSS receiver like the KR-211FH.