This is a Retro-Bit Sega Genesis 2.4 GHz Wireless Controller 8-Button Arcade Pad for Sega Genesis Original/Mini, Nintendo Switch, PC, and Mac. It's black in color and includes two receivers and a storage case.

There's no longer a need to be tethered to your console! The officially-licensed SEGA Genesis® controller has been re-engineered as a 2.4Ghz wireless controller while continuing its original layout and form.  This includes both original and USB® port wireless dongles for use across many consoles and platforms and an exclusive SEGA® case for all the extras!
It has a rechargeable battery that lasts up to 30 hours so you can game to the max for extended durations.

Features and Specs:

? 2.4 GHz officially-licensed wireless controller
? Compatible with SEGA Genesis®, SEGA Genesis® Mini, PC/Mac®, PS3®, and Switch
? Has both SEGA Genesis® port & USB® port dongle
? Has a rechargeable 500 mAh Li-Ion battery (30 hours)
? Includes 3.3 ft of charging cable
? Has gaming range of 30 feet
? Sleep Mode after 10 minutes inactivity
? Includes instruction manual & exclusive SEGA® case for a controller, dongles, and cable storage