The shell adopts all metal CNC processing and surface treatment Exquisite and compact design, suitable for mini Z/Q/D/R and 1/28,1/10 Drift car High quality gyroscope sensor has more stable performance and longer service life Combined with the feedback of multi professional evaluation, the program optimization is more reasonable X, Y, Z 3-axis can be set to match more rc cars. Multiple sensitivity modes are available for more application scenarios. Dimensions: 21 x 15 x 8.5 mm(0.83 x 0.59 x 0.33inch) Working Voltage: 3.7 ~ 8.0V Weight:4g Current Drain: Less than 30mA Operating Temperature:-10+50 Gain Mode: Normal / AVCS Mode Operating Voltage: Control System Input Signal: PWM(50~333Hz)/ /SUR/SXR/SHR;FUTABA S.BUS/S.BUS2 Input & Output Plug: JST1.5mm (attached the signal input cable to connect with receiver) X, Y, Z three-axis selection: Press and hold SW to power on to enter the travel setting, then double-click SW to enter the axis selection, the red light flashes twice and it will stay solid red light (default Z axis), press SW to switch to the X axis green light It flashes twice quickly and turns on, then press it again to switch to the Y-axis, the blue light will be solid, and continue to press SW to switch to the Z-axis. If you do not operate the SW key for 5 seconds, it will automatically exit, and the gyro will automatically enter the initialization. RC Parts & Accs: For Vehicle Type: Cars Upgrade Parts/Accessories: Gyro Model Number: -GYS2-V4 Recommend Age: 12+y Use: Vehicles & Remote Control Toys Four-wheel Drive : Assemblage color:Purple Material:Metal Package Contents: 1 x Racing Gyro Drift Car Stabilizer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the it in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.