A. Objective lens diameter: 42 mm B. Adjustment method: Eyepiece adjustment C. Field of view: 258 feet at 1000 yards D. Dimensions: 165×53 mm E. Waterproof and anti - fog performance: Has waterproof function (not suitable for diving) F. Prism material: BAK4 G. Additional function: Supports mobile phone photography H. Nearest observation distance: 5 meters I. Color: Black J. Material: Metal K. Package contents: - One monocular telescope - One storage bag - One mobile phone clip - One tripod - One lanyard - One lens cleaning cloth - One instruction manual in both Chinese and English L. Only the above package contents are included, and no other products are included. M. Precautions: Due to light reflection and different displays, the color of the items in the picture may vary slightly from the actual product. The measurement error is allowed to be ±1 - 3 cm.