Pleanetary geared motor is always well known with its less backlash and higher efficiency characteristic to meet the higher requiment. This planetary geared motor is manufactured by an establish Taiwanese motor company to ensure the motor's quality and durability.

It also comes with a 7 pulses per rotation,single channel output to provide real time feedback on the rotating position. 

Specification:
Voltage: 12VDC
Rated Torque: ~6.73 kg.cm (660 mN.m)
Rated Speed: 60 RPM
Rated Current: 900mA
Rated Power: 7W
Weight: 267g
Shaft: 6.0 mm diameter x 16.3 mm length
Motor dimension (w x l x h): 32.0 mm x 32.0 mm x 103.3 mm
Compatible motor driver:
Arduino-Shield 2Amp
Gear ratio: 100:1
Encoder Output: 700 pulses per rotation,single channel output​
Brushed motor type