PSA: The G102/G203 LightSync does NOT feature the Mercury sensor : r/MouseReview
Logitech G102 Prodigy Gaming Mouse | 200DPI to 6000DPI, Adjustable optical sensor, LED color customizin,g Classic design, USB connectivity with 2m long cable
G203 Prodigy Gaming Mouse - YouTube
Logitech G203 LIGHTSYNC Wired Optical Gaming Mouse with 8,000 DPI sensor Lilac 910-005851 - Best Buy