This is a Hitec High Voltage D840WP Waterproof High Speed Steel Gear Servo, designed using Hitec's redesigned, cutting edge, custom engineering. Combining industry leading high-resolution, state-of-the-art ultra-response technology with a 32-bit MCU and 12-bit ADC for unprecedented programmability and flexibility, these servos deliver significantly smoother movement. The speedy, powerful line operates on a wide 4.8 ~ 8.4 voltage range, allowing use with any common battery chemistry without the need for adapters or regulators. Featuring Hitec’s 15 tooth HD output spline with 3mm hex screw, each D-Series servo brings monster performance never known before in the market.

Includes:

• Steel Gear Set | Must be serviced by Hitec Service Dept
• Metal/Plastic 1st Gear Set | Must be serviced by Hitec Service Dept
• Plastic/Aluminum Case set | Must be servied by Hitec Service Dept 
• Applicable Horns

Specifications:
Operating Voltage Range (Volts DC): 4.8V ~ 6.0V ~ 7.4V
Speed (Second @ 60°): 0.17 ~ 0.14 ~ 0.11
Maximum Torque Range oz./in.: 265 ~ 335 ~ 419
Maximum Torque Range kg./cm.: 19.0 ~ 24.0 ~ 30.0
Current Draw at Idle: 30 mA
No Load Operating Current Draw: 1,600 mA
Stall Current Draw: 9,000 mA
Dead Band Width: 2 µs
Dimensions (Inches): 2.59 x 1.26 x 2.44
Dimensions (Metric): 66 x 32 x 62
Weight (Ounces): 8.0
Weight (Gram): 227.0
Circuit Type: Digital Amplifier with Mosfet Drive
Motor Type: 5 Poles Cored Metal Brush
Gear Material: Steel
Bearing Type: Dual Ball Bearing
Output Shaft (type / Ømm): Mega 15
Case Material: Plastic/Aluminum
Dust/Water Resistance IP 67: Yes
Connector Gauge (AWG)/Strand Count: 25/80

Limited Warranty:
Hitec Servo Warranty: Each Hitec servo is backed by a limited two-year warranty from the date of purchase. Hitec RCD USA, INC. shall REPAIR OR REPLACE, at Hitec RCD, INC., defective equipment covered by this warranty, otherwise the purchaser and/or consumer is responsible for any charges for the repair or replacement of the product.