Lightweight Design, Heavyweight Performance – Introducing KATAR PRO Gaming Mice from CORSAIR | CORSAIR Newsroom
Corsair KATAR PRO XT Review - RTINGS.com
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