I researched for weeks looking for the best notebook/travel friendly mouse before settling on this one. This mouse is ergonomic, the battery life is good, the wireless response is adequate, and it's small enough to fit in a laptop bag without being "too small" for extended daily use. Key features lacking in this mouse are an on/off switch and rechargable battery which apparently can only be found in the giant non-portable or micro "hand mangler" varieties. Size-wise this mouse is a happy compromise. Very pleased with my purchase!