This is the Futaba R319DPS PCM 9 Channel Dual Conversion 72MHz Synthesized Receiver. This receiver is a replacement for the R309DPS receiver. FEATURES: Perfect upgrade for the 9Z radio, but can also be used with the 9C or 9C Super No crystal required, simply move two rotary switches to match transmitter channel One year limited warranty INCLUDES: One Futaba R319DPS PCM 9 Channel Receiver with tuning screwdriver and instruction sheet REQUIRES: Installing in model and connecting battery and servos SPECS: Length: 2.1" (53mm) Width: 1.3" (33mm) Height: .8" (20mm) Weight: 1.25oz (35.4g) Power Requirement: 4.8V or 6V jxs 12/08/04 ir/jxs