This is the Futaba R2106GF 2.4GHz FHSS 6-Channel Micro Receiver.

Features:

• Compatible with all Futaba FHSS/S-FHSS transmitters **Not compatible with FASST systems** 
• Short range for indoor and park fliers.
• Normal and High-Speed Modes:     
• Normal mode frame rate is (FHSS/S-FHSS) 13.63ms and accepts any type of servos or peripherals.
• High-Speed mode (in 4PL tx only)  with an output of 6.8ms accepts digital servos including the BLS series and most peripheral equipment such as brushless ESCs    
• One year limited warranty through Hobby Services beginning at date of purchase

Includes:

• Futaba R2106GF 2.4GHz FHSS 6-Channel Micro Receiver with Instructions

Requires:

• Installing in aircraft and connecting battery and servos

Specifications:

• Size: 1.5 x .85 x .40 (38 x 21 x 10mm)
• Weight with Case: 0.14oz (4g)