The Bresser Optik 4914912 1.25 Eyepiece Smartphone Adapter is a practical accessory for using smartphones in conjunction with binoculars. Weighing only 50 grams, this adapter is lightweight and easy to handle. It allows you to capture images and videos through the eyepiece of a telescope, significantly enhancing the observation of natural phenomena or astronomical objects. The adapter has a compact design with dimensions of 80 mm in width, 155 mm in length, and 22 mm in height, making it a handy companion for outdoor activities. The objective diameter is 34 mm, allowing for versatile use with various binoculars. The package includes a smartphone holder that ensures secure attachment of the device. The adapter is finished in a simple black color, giving it a modern and unobtrusive design. It is an ideal solution for anyone looking to digitally document their observations.