Details: Based on the RX471Built specially with micro cars in mind, ultra light weight for low cg with micro JST sockets.[GX-033] Micro FHSS-4 4-Channel receiverSpecifications: Nominal Input Voltage: 4.8-7.4V Weight: 0.050oz (1.71g) Dimensions: (22.9x14.4x5.8mm) Frequency: 2.4GHz FH3/FH4 Selectable Via Transmitter Fail-Safe Support: Yes (All Channels) Battery Voltage Fail-Safe Limit: 3.5-5.0V (FH3) / 3.5-7.4V (FH4)Dimension:Length: 22.9mmWidth: 14.4mmHeight: 9.5 (Plugs included)