Features:Miniature and exquisite design, ultra-light weight (only 1.7g, including wire 1.9g) Using digital controller, motor drive Large torque of mini steering gear (0.17kg.cm); sensitive speed (0.04sec.60 degree) Basic parameters: Working voltage: 3.7~5.0V Torque: 3.7V: 2.08 oz-in (0.15 kg-cm) 4.2V: 2.36 oz-in (0.17 kg-cm) Speed: 3.7V: 0.06 sec/60 degree 4.2V: 0.04 sec/60 degree Motor type: hollow cup Gear type: plastic gear Outgoing wire description: The outgoing wire is JST1.0mm plug wire, Applicable fields: helicopters, fixed wing, industrial intelligence, etc.! Colour:Black & White Material:plastic Size:13.5x6.2x20.1mm Package Contents: 4 x 1.7g Digital Servo Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.