HUAWEI 607HW Pocket WiFi, featuring a lithium-ion battery, manufactured in 2017. - Model: 607HW - Brand: HUAWEI - Battery Type: Lithium-ion - Year of Manufacture: 2017 - Function: Pocket WiFi For standard SIM cards. Please note. SIM card not included; please provide your own. Although the lithium-ion battery is marked as 2018, it was purchased new in the fall of 2024 from a telecommunications company's website. (The battery I was using before deteriorated in the extreme heat.) I haven't used the WiFi much in the past year, so the battery has been charged infrequently. I canceled my contract with the telecommunications company this year. At that time, I was told that the device itself could be used as SIM-free, so please feel free to use it if you wish. The white outer cover case shows some signs of use. Please refer to the photos for the charging port type. Will be sent wrapped in cushioning material. No claims and no returns accepted.