Cost reduction for communication expenses, review of expenses. Color: White Rakuten Mobile fixed-line conversion, wireless LAN. This is the SONY AI Home Gateway NCP-HG100. You can create an environment similar to a Buffalo wireless LAN using your Rakuten Mobile SIM card. I used it with Rakuten Mobile because I wanted an affordable internet environment following the discontinuation of ADSL. I live in the countryside and use a SIM card, so I think it's good for people like me who don't need fiber optic internet. You can have Alexa play music. [Product Description] Model Number: SONY NCP-HG100 Main Specifications: 4G (LTE) B1/3/8/19/21/28 (Connects with Docomo and Softbank SIMs) Wired LAN 1000BASE-T Wireless LAN ac/a/b/g/n 2x2 MIMO Alexa compatible [Product Condition] Included items: Main unit, AC adapter, instruction manual (simplified)