* No Risk Warranty * 1 year warranty, if you have any issues, please feel free to contact us, we will replace or refund for you without returning. Easy, simple, and no risk for youParametersModel: 8 x 21Magnification: 8 timesObjective diameter: 21mmEyepiece diameter:13mmAngle of field: 7 degreesView of field: 369 ft/1,000Yds&131m/1000mExit pupil diameter: 2.6mmEye relief: 11mmMini focus length: 2mPrism: BK7Coated: object lens: FCM green coated, eye lens: CM blue coatedFocus system: Center focusProduct size: 3.5’’ x 2.4’’ x 1.4’’Item weight: 0.4lbPackage1 * 8 x 21 Binocular1 * Cleaning cloth1* Carry bag1 * User manual