K&F Concept 8x21 Compact Binoculars for Kids and Adults with BAK4 Prism, FMC Lens, IP65 Waterproof & Neck Strap Bird Watching, Hunting, Travel, Camping, Star Gazing

8 x 21 binoculars: 16 mm enlarged eyepieces, provide a wide angle and large field of view, sufficient light. 21 mm large object diameter, provides a wider field of view, so you can see the distant landscape and animals clearer and brighter. The viewing range is 113-1000 m. The lightweight and portable design is more conducive to use by children and a more intimate interaction with nature. BAK4 prism and multi-layer coating: both the eyepiece and the lens use high-quality BAK4 prism + FMC broadband green film. A multi-layer coating can effectively eliminate internal light loss and avoid dark image edges. The light transmission is 99% and offers you the best brightness and true colours. IP65 waterproof: the binoculars are IP65 waterproof, which does not affect your outdoor use even in rainy weather. The airtight material can effectively prevent dust from entering the cavity. Two-way focusing wheel + lifting eyepiece design: the focus wheel can quickly adjust the centre and surrounding parts of the image to the high-resolution overall state, avoiding partial blurring of the image. You can turn the right eyepiece adjustment ring left and right so that both eyes see the same scenery. Liftable eyepieces are suitable for people with normal vision and myopia. High-quality components: high-quality, environmentally friendly rubber lens barrel. The surface is equipped with a finely matte texture that can effectively prevent slipping and sweat. The side of the mirror body has a strong strap hole that can be worn on the chest and worn on the chest, which is more convenient for long distance wear.