This is Apple's Magic Mouse 2 (Model: A1657), which is a rechargeable wireless mouse designed for Mac and iPad.
Detailed description of the mouse:
Model Number: A1657 (EMC 2923)
Serial Number: CC2824605SNJ2XPA7
Power & Charging: Features a Lightning charging port on the bottom. It is powered by a built-in rechargeable lithium-ion battery with an input rating of 5V ⎓ 1A.
Control & Gestures: The entire top surface is Multi-Touch. It has no physical scroll wheel; scrolling and various gestures (swiping) work via touch.
Switch & Sensor: On the bottom, it features an optical tracking sensor, a slide on/off switch, and two black glide rails for smooth movement.
Design & Build: Designed by Apple in California and assembled in China. The top is made of glossy white acrylic and the bottom features an aluminum finish.