Quick overview from the supplier:
SALE PointWrite PW01 KIT PRJ GREY
Dimensions(W x H x D) : Module: 71 x 29 x 86.3 mm
Pen: 153 x 14.5 mm
Weight : Module: 32 g
Pen: 80 g
Power Supply : Module: USB Power / Interface: mini USB
Pen: 1.5v 3A Battery x 2
Response Time : 0.016 Sec
Compatible Model : MX819ST, MW820ST, MX823ST, MW824ST
Technology : Infrared
Multi Pen Supported : Up to 4 Pens
Refresh Rate : 60 Frames / Sec
Operation Screen Size : Max 150” Projection Size
Auto Calibration : Yes
Software : Calibration software: PointWrite
Interactive software: QWrite/ QWrite Player
On-Screen Display Languages: Bulgarian / Czech / Danish / English / Finnish / French / German / Italian / Japanese / Korean / Norwegian / Persian / Polish / Portuguese / Russian / Spanish / Swedish / Simplified Chinese / Traditional Chinese
Supported OS: Windows XP / Vista / 7 / 8 / Mac 10.6 and newer / Linux
Certification : IC / FCC / (China) RoHS / SRRC / CE / LVD / REACH / WEEE / C-Tick / BSMI / NCC
Accessories (Standard) : PointWrite Module x 1
PointWrite Pen x 2
Screw x 2 (fix to projector)
AAA Battery x 4
Alternative Pen nib*5
USB Cable x 1(5 m, mini B to A)
CD x 1(User Manual / PointWrite / QWrite / QPlayer)
Quick Installation Guide x 1
Wrist Strip x 2