wireless mouse 2.4 1.wireless presenter with thumb mouse; 2.Integrative design; 3.CE,FCC,RoHS,FDA approved RF2. ... memory optional.Technical parameters Others Feature1, Mini receiver can be stored into transmitter;2, Thumb mouse, laser mouse & optical mouse integrative ... , Warranty period: 1 year;4, International standard met: CE, FCC, FDA & RoHS5, Standard package: color box; V-288 Wireless mouse 2.4