Super small and light, designed for indoor aircraft, does not support failsafe. 

Features:

• Super small and light, designed for park flyers and indoor aircrafts;
• Compatible with all FrSky modules (V8 mode & D mode), receive only (VD5M can talk with module of either mode, but it does not send any telemetry information back to the transmitter

Specifications:   

• Brand Name: FrSky
• Item Name: FrSky VD5M Receiver                                                                                    
• Dimension: 21 x 16 x 5.8mm                                                                              
• Weight: 2.0g
• Number of Channels: 5
• Operating Voltage Range: 3.0V-7.2V
• Operating Current: 20mA
• Operating Range: >300M
• Connector Specification: 1.25mm pitch

Compatibility:

• FrSky modules (V8 mode and D mode)

• 1 x FrSky VD5M Receiver