This is the Spektrum DXC+ DSMR+ Transmitter with SR615 Smart Receiver

Features:

• Dual Protocol (DSMR/SLT) Compatibility
• Twelve fully proportional channels with user-friendly steering and throttle mixes
• Frequency-agile, Spektrum® DSMR+® 2.4GHz technology
• Backlit LCD screen for better visibility
• USB for firmware updates and VRC compatibility
• Spektrum Smart Technology ready
• Program and fine-tune compatible AVC® receivers
• 20-model memory
• Smooth, dual-ball bearing precision
• Non-slip rubber grips
• Back button makes navigating the interface more intuitive
• Steering mix, 4-wheel steering mixing, plus one assignable Mix
• Bind-progress screen displays status and frame rate
• Compatible with DSMR and DSM2* receivers
• EN328 compatible

Specs:

Product Length: 6.29" (160 mm)
Technology: DSMR Protocol, DSMR+, Smart, SLT Protocol
Transmitter (Tx) Battery Type: AA Dry Cell
Frame Rate: 11ms, 22ms
Input Voltage: 3.5–9.6V
Connector Type: USB
Programmable: Yes
Bearing: Dual-ball bearing
Range: Full
Bind Method: Bind Button
Channels: 12
Antenna Length; Integrated
Product Height: 9.88" (251 mm)
Completion Level: Transmitter and Receiver
Bushing Or Bearing: Bearing
Data Port: Yes
Band: 2.4GHz
Audio: Alarms and Tones
Failsafe: Yes
Product Width: 4.8" (122 mm)
Application: Surface cars, trucks, boats
Model Memory: 20
Product Weight: 402g
Telemetry: Yes
Receiver: Included
Modulation: DSMR+ / DSMR
Operating System: Raceware