Here are some key features and characteristics of the Emax ES3059MD digital actuator:

Metal Gears: The inclusion of metal gears makes this actuator more durable and capable of handling higher loads and stress compared to plastic gear servos.

Digital Servo: Being a digital servo means that it provides precise and accurate control. It's capable of delivering precise and consistent movement, which is essential for applications where accuracy is crucial.

12g Weight: The 12-gram weight indicates the physical size of the servo. It's a lightweight option suitable for small to medium-sized RC models and robots.

Metal Case: The metal case provides additional protection and durability for the internal components, making it more robust in demanding applications.

High Torque: Depending on the specific model, this actuator may offer a high torque output, which is essential for applications where the actuator needs to exert significant force.

PWM Control: The actuator is controlled via a PWM signal. PWM is a common method used in RC applications to control servos and other devices. The width of the PWM pulse determines the servo's position.

RC Model and Robot Use: This actuator is versatile and can be used in a wide range of RC models and robots, including aircraft, cars, boats, and ground-based or aerial robots.

Voltage and Current Requirements: Be sure to check the voltage and current requirements of the actuator to ensure compatibility with your power source and servo controller.