Zoom 4300 Bluetooth Wireless Technology Modem. Modem speed: 56 Kbit/s, Interface: Bluetooth V1.2. Data compression: V.42bis, MNP5, Supported protocols: V.90, V.34, V.32bis, V.22bis, V.22A/B, V.22, V.23, V.21, Bell 103/212A V.17, V.29, V.27ter. Compatible operating systems: Windows 98SE+. Compliance certificates: RoHS, CE, Federal Communications Commission (FCC), UL, cUL, Certification: FCC parts 15B/FCC parts68/UL, C-UL/Industry Canada/RoHS/CE. Depth: 3.82" (97 mm), Height: 0.866" (22 mm), Width: 3.11" (79 mm)