kikkert 3 5 10x50eIncredibly cool binoculars from ASG. This model has a 3. 5x to 10x zoom function. And can be adjusted so that it focuses on what you want to aim for. It comes with a light so the crosshairs can be lit up with either red or green and even has 5 different light intensities so it can be adjusted to suit you. The tube on the binoculars is 1". Airsoft mounts (21mm) are included. If it is to be attached to air rifles, 11 mm mounting rings must be purchased.