Zoom 4300 Bluetooth Wireless Technology Modem. Modem speed: 56 Kbit/s, Host interface: Bluetooth V1.2. Compressed data storage: V.42bis, MNP5, 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: 97 mm, Height: 22 mm, Width: 79 mm