feature: 1. It is waterproof for daily use, which can better extend the service life of the telescope and easily cope with any harsh environment. 2. BAK4 prism and multi-coated lenses improve light transmittance and image clarity. 3. Central focusing knob, smooth operation.Broadband green film coating increases light transmittance and makes imaging colors fuller. 4. Metal tray, with better quality and improved anti-fall performance, can effectively extend the service life of the telescope, which is unmatched by other plastic trays! 5. and compact, suitable for camping, hiking, concerts, bird watching, hunting, travel, golf, sporting events and other outdoor activities. Mode: 900x25 Prism material: BAK4 Lens coating: blue film eyepiece, green film objective lens Field of view: 900M/90000M notes: 1. Maintain an appropriate exit pupil distance from the eyepiece. If the sticker is too close or too far, you feel a dark shadow in of view when observing, and you not be to obtain a complete field of view. 2. Adjust the interpupillary distance. Adjust the distance between the two lens barrels to match the interpupillary distance of your eyes so you can see the images overlap. 3. Focus. Turn the focus wheel slowly to focus and adjust sharpness! 4. Do not use a telescope to observe the sun directly. This can cause serious damage to your eyes or even blindness. Material: Rubber + metal colour: Black Package Contents: 1 x binoculars 1 x lens cleaning cloth 1 x storage bag Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.