The Rapoo B20 is a silent, wireless optical mouse featuring a 2.4G wireless connection, a 10-meter working range, and a 1200 DPI infrared sensor. It is designed as an entry-level mouse with basic functionality, suitable for office or home use. The B20 is powered by a single AA alkaline battery, which can last up to 12 months, and has a compact design with dimensions of 113 x 60.5 x 37.7 mm.