Features and specifications: 1) Cupreous tube with high class rubber paint 2) Super smooth and comfortable 3) IR technology 4) Tailored as a convenient handy-tool for presentations, teachings, meetings, speeches, trainings 5) Consists of a remote control, a laser pointer 6) Functions: a) Laser pointer function b) Page up/down function c) Built-in flash memory available (to be used with our V-150 receiver) 7) Chinese patent no: 200430043979.8 8) System: Windows98/2000/ME/XP Linux & Mac OS 9) USB plug and play, no driver required 10) Laser distance: >200m 11) Control distance: >15m 12) Dimensions (H x Ø): 11.9 x 1.4cm 13) Transmitter weight: 60g (including batteries) 14) Battery: LR44 x 3pcs