If you have during the product purchase process, please feel free to . We will be happy to assist you. We also offer a 180-day , so you can buy with confidence.Lightweight and PortableThe slim and compact design makes it easy to carry; whether you're working from home or traveling, this 4G travel LTE router keeps you connected anytime, anywhere.High-Speed InternetThis 4G mobile router is designed to provide users with a high-speed 3G/4G internet experience and supports mainstream 3G/4G frequency bands in most countries and operators worldwide.2100mAh High-Capacity BatteryUp to 10 hours of standby time, faster speeds, and greater portability. Supports SIM card insertion for seamless 4G mobile network access. LED smart display for easy operation.Wide CompatibilityEasily connect to mobile phones, laptops, desktops, or tablets with just a standard SIM card (SIM card sold separately). This mobile router is primarily aimed at in-car users, business travelers, and outdoor travelers, supporting up to 10 simultaneous users. Supports Linux 8/10 systems.