This is a Futaba FUTK3200 3PV R304SB with R304SB Receiver Telemetry TFHSS. This Futaba R304SB-E is very similar to the R304SB (FUTL7680) in that they both feature 4-channels, both feature S. Bus2, both are Telemetry enabled and both cost roughly the same price. However, the two receives differ in two fundamental areas: this R304SB-E is only intended for electric vehicles, the R304SB is electric/nitro/gas, and this R304SB-E features the benefit of having a non-exposed built-in antenna – the R304SB is fully exposed. Futaba 01004347-3 3PV 3-Channel 2.4GHz S-FHSS Radio System w/ R304SB Receiver. Features: T-FHSS System Telemetry Enabled 4-Channels Built-in Hidden Antenna Electric Vehicle Use Only Specifications: Futaba System: T-FHSS S. Bus2: Yes Channels: 4 Range: 70m (230ft) (at best conditions) Power Requirement Rated Voltage: 4.8-7.4V Usable Voltage: 3.5-8.4V Size: 1.38×0.91×0.33 (35.1×23.2×12.5mm) Weight: 0.23oz (6.7g) Note: Never use this R304SB-E receiver in an R/C model with an engine; only electric powered models! Futaba T-FHSS systems do not work with current Futaba S-FHSS/FHSS/FASST-est/FASST systems. Condition: Factory New Operational Status. This item is brand new from the factory. The Trainz SKU for this item is P12235423. Please note, after seven days our systems may automatically re-list unpaid items. Learn more by reviewing our policies. Explain why the item does not meet your expectations and how you would like us to handle the issue. If your item has been damaged try to include a photograph of the actual damages. We’ll do our absolute best to make you happy. Make sure to include your contact and order information when you return your items. Contacting Trainz provides us a chance to resolve your issue while allowing you to keep the item. O Scale 2 Rail.