Brand new, never opened, base still has the wrapping around it. Base is a 70w USB-C Power adapter. Compatible with newer macbook models. Description from Apple Website: The 70W USB-C Power Adapter offers fast, efficient charging at home, in the office or on the go. It’s compatible with numerous USB-C devices and charging cables. Apple recommends pairing this power adapter with a 13-inch or 15-inch MacBook Air with M2 chip, a 13-inch MacBook Pro (2016 and later) or a 14-inch MacBook Pro. Use it with MacBook Air with M2 chip models to take advantage of fast charging, for up to a 50 percent charge in around 30 minutes.** Compatibility list (screenshot) from Apple website.