Used but in perfect working order*.
The battery still holds for many hours.
If one day you would need to replace the battery, they are still sold. Just do a eBay search with the words:
To install a SIM card you have to remove the cover. This applies also if one day you woould want to replace the battery.
* The cover of the battery has a corner that broke away when I tried to lift the cover for the first time, to install a SIM card (See picture nr.7) but this doesn´t affect the operation of the device and aesthetically, the missing corner of the cover is not visible when you put the router in the normal position (picture nr.1 to 6)
How to lift the cover to install s SIM card:
There is a specially designed small arch indent on the side of the cover where one should put his ir her nail to lift the cover (See picture nr.8)
There are 2 slots in which you can install SIM cards (beneith the battery):
1 slot for a normal SIM card and 1 smaller slot for a Micro SD card.
Manufacturer's description:
Mobile 4G/LTE WLAN router, integrated 4G modem, SIM card slot, 1.4 "TFT display, 2550mAh battery power, micro SD card slot, LTE-FDD/DC-HSPA +/GSM, 300MBit/s to 2.4GHz/5GHz The M7350 is the top-of-the-line M7350 wireless LAN LINK with the 4G/LTE SIM card , The M7350 is capable of operating up to 15 users/devices simultaneously, with up to 150 Mbps in the download and 50 Mbps in the upload (2G/3G/4G), Wi-Fi status, messages, data volume, and battery status. Its compact design and powerful 2550mAh battery make it the ideal companion for the road.
Technical characteristics
Connectivity
Safety
Interfaces
General characteristics