Features 1、Compatible with binoculars, monocular telescopes, telescopes, microscopes, night vision and most optical equipment, suitable for eyepiece diameter 25mm‑48mm. 2、The clamping force can be adjusted. The clamping part of the mobile phone adopts an adjustable locking mechanism and is equipped with bolts. 3、The mobile phone clip can be stretched from 5.5cm to 10cm in length, and it can also be installed separately on a tripod. 4、The whole is made of aluminum alloy, which is strong and wear‑resistant, and has a long service life. 5、The phone clip is equipped with a plastic pad to avoid damage to the phone and it is very convenient to carry. Specification Item Type: Cellphone Adapter Material: Aluminum Alloy Color: Black Phone Clip Stretch Length: Approx. 5.5-10cm/2.2-3.9in Eyepiece Diameter: Approx. 25-48mm/1-1.9in Weight: Approx. 123g/4.3oz Package List 1 x Smartphone Adapter