Physically, these two mice share the same ambidextrous orientation and minimalist design philosophy — no RGB lighting, no tilt wheel, no modular weight system — but they differ notably in size and mass. The L7 weighs just 39 g, making it an exceptionally light mouse even by modern ultralight standards, while the L7 Ultra Plus comes in at 48 g. That 9-gram gap is perceptible in hand during extended sessions; lighter mice reduce wrist and arm fatigue over long gaming periods, which is why the sub-40g category is highly sought after by competitive players.
The dimensional differences follow the same pattern. The Ultra Plus is larger across every measurement — slightly taller, wider, and thicker — resulting in a meaningfully bigger volume (~287 cm³ versus ~253 cm³). In practical terms, the Ultra Plus will suit users with larger hands or those who prefer a more substantial feel, while the L7's compact footprint and featherlight build cater to low-grip, fingertip, or claw-style users who prioritize swift, effortless movement.
On design, the L7 holds the edge for weight-conscious users, delivering a significantly lighter and more compact package. However, this is inherently preference-driven — neither mouse is objectively superior in form factor, and the Ultra Plus's larger shell may actually be the more comfortable fit for users with bigger hands. The deciding factor here comes down to personal grip style and hand size rather than a clear performance-based winner.