EZtour is a two-way guiding system by which tours quickly start/end with one press and no training is required. Clear message conveying among the guide and his guests is ensured even in a noisy environment. Even, it will never be bothered if any guest arrives late as he or she can be invited in the group easily and quickly by EZtour. Featuring okayo's proprietary audio encryption, group conversation is secured without being disturbed. With talk-back function activated, positive interaction among guests will be encouraged which leads your tour be more unique and unforgettable. Having an assistant guide in a group is possible for dual-speaker purpose, if necessary. ~100 m operating range makes group sizes be more flexible for various tour itineraries, e.g. street/campus/museum guided tours, factory tours, field trips, commercial workshops or training courses. Specifically, extraordinary VIP tours, such as theater/winery/theme/countryside tours, are highly recommended. Let EZtour impress your valuable guests!