Function : 1. 3G 4G High Speed Internet: 4G LTE Mobile WiFi Router, designed to provide users with high-speed 3G 4G Internet access, supporting 3G 4G main band in most countries and carriers around the world. 2. Wide application: The portable 4G WiFi router is mainly for car users, business travelers and outdoor travelers, supporting ten users at the same time. 3. Long Standby Time andamp Smart LED Display: The 4G WiFi Router has a large battery capacity of 2100mAh, with up to 72 hours of standby time WiFi smart LED display, easy to operate. 4. Small and portable: The mobile WiFi hotspot features a slim and compact design, making it easy to carry and let WiFi track you around the world. 5 . Easy to connect: WiFi router can be easily connected to WiFi by simply inserting a standard SIM card, whether it is a mobile phone, laptop, desktop or tablet (SIM card not included) Specification: Item Type: 4G WiFi Router Material : ABS Model: H806 Colour: black Type: Plug in Card Card slot: standard SIM card Battery type: Built-in 2100mAh lithium battery (included) 4G LTE band: B1 B3 B5 B40 3G UMTS WCDMA: B1 Peak Speed: 150Mbps Download, 50Mbps Upload WIFI: Support 802.11bgn Sharing: 10 users Package List: 1 x 4G WiFi Router 1 x Charging Cable 1 x Manual Please check whether there is a partition sticker on the built-in battery interface before powering on. If it is, you need to take it off and turn it on, otherwise it can't be turned on.