Reddit reviews Kensington 72229 PocketMouse Convertible Dual-Size Mouse

DiamondEye optical technology responds to your fastest movements with accurate tracking on virtually any surfaceUltra-compact mouse with go-anywhere size has AirForm shell that clips on for the comfort of a full-size mouseInterference-free Quick RF wireless technology prevents cursor hesitation to provide ultra-smooth movement and precise controlBacked by a one-year manufacturer's warrantyLike having two mice in one, with 2 programmable buttons to streamline tasks and a scroll wheel to speed through long documents