Xpert R2 Standard Size Aluminum Cyclic Servo hat the AR-8444S builds on the

the AR-8444S builds on the success of the super reliable AR7444S servo offering a full metal case

4V Size: 23*12*27

2 mini high Tq (Nose wheel steering and Rudder)

THE BATTERY F/S VOLTAGE IS SET FOR 4-CELL NiCd/NiMH BATTERY

the TANDEM PRO continues to break new ground in RF performance

Xpert R2 Standard Size Aluminum Cyclic Servo hat the AR-8444S builds on theFeatures: Quick release cable that allows easy and quick installation for all helicopters. Brushless motor design provides extremely high speed, top efficiency, and low power consumption. 4096 resolution and SIC (Single Integrated Circuit) for the highest performance and durability. Aluminum upper and center case. Plastic bottom case. Strong metal gear. Glitch free. Sophisticated error correction. High Speed, High precision 12 bit AD converter and CPU