The Unihertz Tank 4 is a robust smartphone designed for demanding conditions. With IP68/IP69K and MIL-STD-810H certifications, it offers comprehensive protection against water, dust and shocks. The durable housing made of PC plastic and aluminium ensures a high level of resistance. An outstanding feature is the integrated 720P DLP projector, which can project images with a brightness of up to 100 lumens. The MediaTek Dimensity 7300 processor, supported by 12 GB LPDDR5 RAM and 12 GB virtual memory, ensures smooth performance and multitasking capabilities. With 512 GB of UFS 3.1 memory, which can be expanded by up to 2 TB using a MicroSD card, the device offers plenty of space for data. The Android 14 operating system ensures up-to-date functions and compatibility with applications. The 6.78-inch 2.6K AMOLED display with 120 Hz refresh rate and a contrast ratio of 5,000,000:1 ensures razor-sharp images and natural colours. The camera equipment includes a 50 MP main camera, a 64 MP night mode camera and an 8 MP telephoto camera, while the 32 MP front camera is ideal for selfies and video calls. Additional functions such as large LED panels, fingerprint sensor and face recognition increase user-friendliness.