... according to the Internet: (https://www.testberichte.de/p...)

Data sheet for Huawei 4G Router 3 Pro
Modem type 4G / LTE
WLAN standard
802.11n802.11a802.11b802.11g802.11ac
Maximum data transmission rate 1200 Mbps
Frequency bands
2,4-GHz-Band5-GHz-Band
Number of network ports 4
Dimensions (W x D x H) 219 x 138 x 25.6 mm
Maximum number of connected devices 64
DECT base missing
Also found under the following model numbers: 51060DRJ, B535-232