Corsair CORSAIR KATAR PRO WIRELESS (CH-931C011-NA)
More info on the Corsair Katar Pro (Wireless), 69 grams for the wired, 96 for the wireless (Uses AA so could be lighter), 3327 for the wired, 3325 for the wireless (?) : r/MouseReview
Corsair Katar Pro XT Ultra Light Gaming Mouse, 1 ct - Fred Meyer
NEW Corsair KATAR PRO Ultra-Light Gaming Mouse USB Wired 12400DPI optical sensor | eBay
KATAR PRO Ultra-Light Gaming Mouse
Amazon.com: Corsair Katar Pro XT Ultra-Light Gaming Mouse- 18k DPI PixArt Optical Sensor- RGB Scroll Wheel Lighting- 6 Programmable Buttons- Lightweight Paracord Cable : Video Games