Logitech G502 Proteus Spectrum vs Logitech G703 LIGHTSPEED

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

G502 Proteus Spectrum compared with G703 LIGHTSPEED
LogitechG502 Proteus SpectrumLogitechG703 LIGHTSPEED
Overview
ReleasedJanuary 2016June 2019
Tracking
ShapeErgonomicErgonomic
HandRight handRight hand
SensitivityUp to 12,000 DPIUp to 25,600 DPI (better)
SensorPMW3366 opticalHERO 25K
Buttons11 (better)6
Free-spinning wheelYesNo
Thumb wheel–No
SensorPMW3366 optical sensor with 200–12,000 DPI, surface calibration and a 1,000 Hz USB report rate; Logitech claims no acceleration, smoothing, filtering or pixel rounding.HERO 25K sensor, 100–25,600 DPI; over 400 IPS; over 40 G; 1,000 Hz (1 ms) report rate wireless and wired (launched in 2019 with the HERO 16K sensor, up to 16,000 DPI)
Scroll wheelDual-mode hyper-fast wheel switches between stepped and free-spinning vertical scrolling and tilts left or right.–
Connections and battery
Connects byCableUSB receiver and Cable
PowerCableRechargeable
Battery life (maker's claim)–Up to 60 hours
Receiver–LIGHTSPEED wireless USB receiver and receiver extension adapter included
Charging–Rechargeable; up to 60 hours with lighting off and 35 hours of constant motion; 1.8 m charging and data cable; POWERPLAY wireless charging compatible (sold separately) with the included POWERCORE disc
Works withWindows 7, 8, 8.1 and 10 at launch; wired USB 2.0 connection.–
SoftwareLogitech Gaming Software at launch, with programmable buttons, macros, surface tuning, RGB effects and three onboard hardware profiles.Logitech G HUB (LIGHTSYNC RGB lighting, button programming)
Design
Weight121 g95 g (better)
Size131 × 75 × 41 mm (length × width × height); 1.83 m cable. Le Comptoir du Hardware measured 121 g before the optional weights and 139 g with all five. Logitech support's listed “2.96 g (5 ounces)” is internally inconsistent, so its weight figure is not used.124 × 68 × 43 mm (length × width × height); 95 g, plus an optional 10 g weight
MaterialsFive removable 3.6 g weights adjust mass and balance; textured rubber side grips and individually mounted main buttons.Mechanical button tensioning system with metal springs; dual-injected rubber side grips; LIGHTSYNC RGB lighting
Colours–Black
In the boxMouse, five optional weights with case and documentation.Gaming mouse, LIGHTSPEED wireless receiver, charging/data cable, receiver extension adapter, optional 10 g weight, user documentation
Warranty–2-year limited hardware warranty

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