Samsung Z4

Some of this smartphone’s additional features really optimise it for outdoor and professional use, or even as a walkie-talkie alternative, such as its SOS function which allows you to easily call for help in emergencies. Dual SIM capability means that just one Titan 600 Evo can operate on two accounts, allowing you to seamlessly use one device for both professional and personal needs. The impressive battery life, providing up to 18 hours’ talk time and 744 hours’ standby time, means your device will survive long expeditions or trips away from electricity sources. Finally, Push-to-Talk allows you to use this smartphone like a traditional two-way radio when necessary.