Unlimited range walkie talkie Received goods please install the battery lock the battery screws,check whether the SIM card is installed properly,power on and wait a few minutes to wait for network adaptation(about 1- 2 minutes),press and hold the PTT key to communicate immediately! Nationwide Walkie Talkies enjoy a full year of data service,365 days of seamless connectivity with 12GB of high-speed data across multiple networks seamless communication across the entire country clear voice transmission over a nationwide cellular 4G LTE data network,without subscription fees. Global walkie talkie unlimited range rugged design Adapt to multiple environments, Built to withstand harsh environments,Versatile for construction workers,logistics and transportation goods distribution,police,firefighters, outdoor organizers,team camping,cross-country communication,and more. Radio walkie talkie with LED Flashlight and Three Color Explosive Flashing Light,three different color lights and it is equipped with powerful LED lighting,strong light low light burst flash adjustment,whether it is camping,hiking or working in low light environment,it can provide sufficient lighting. How to pair more than two walkie talkie?Typically,each set of radios will be preset with default settings before shipment and can be used directly upon arrival,if you increase your walkie talkie purchases,you can create a different group name at your request!Please send us the account number on the card and we can create it in the same group for you.Tip:If you have any problems,please contact us in time,We'll fix your problem. Stay connected no matter where you are with our KAYOTOM 2-Pack 4G Push To Talk Over Cellular Radio Walkie Talkies,global walkie talkie comes with a SIM card for unobstructed calls without any hidden charges;200 groups can be created,individual groups can be created,long range walkie talkie for multiple groups,unlimited range,wider range of operation,Provides instant,always-on communication between teams,enhances your communications.