The Apple 60W MagSafe 2 Power Adapter is a specific charger designed for certain MacBook Pro and MacBook Air models. It features a magnetic MagSafe 2 connector, offering a T-tip design that's thinner and wider than previous MagSafe connectors to accommodate newer, slimmer laptops. The adapter provides 60 watts of power, indicated by the 16.5V output at 3.65A. 
Key Specifications:
Power: 60W
Input: 100-240V, 50/60Hz (suitable for worldwide use)
Output: 16.5V, 3.65A
Connector: MagSafe 2 (T-tip)
LED Indicator: Amber for charging, Green for fully charged
Compatibility: 13-inch MacBook Pro with Retina display (Late 2012, Early 2013, Late 2013, Mid 2014, Early 2015) and MacBook Air (2012-2017)
Weight: Approximately 204g (7.2 ounces)
Cable Length: 1.78 meters (5.83 feet) 
Features:
Magnetic Disconnection: The magnetic connector detaches safely to prevent damage if someone trips over the cord.
LED Indicator: Provides visual confirmation of charging status.
Removable Duckhead: The AC connector can be swapped for different plug types or a power extension cable. 
Additional Information:
The MagSafe 2 design was introduced to accommodate the thinner form factors of the MacBook Air and MacBook Pro with Retina Display. 
The MagSafe 2 connector is wider than the original MagSafe to maintain a strong magnetic grip force despite the thinner design. 
The T-shaped design helps reduce fraying of the power cord.