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The S4 mini is a crossover model in the fields of education, business, and engineering. It uses alpd2.0 light source technology, which delivers brightness of 5000–7000 lumens. It can be retrofitted with a 5G module to support the next generation of high-speed data transmission capacity. It supports remote control and multi-machine cooperation. The overall shape is simple and fashionable, which allows for better integration into various working environments. The cooling system ensures a 70% air intake and output rate, allowing the machine to stably project at 7000 lumens and 4K resolution. To enhance the plain appearance, a little champagne gold is used as an embellishment to add a touch of class without losing the sense of professionalism.