These are the cheapest binocular deals ahead of the Amazon Prime Big Deal Days

Celestron Nature DX 12x56: was $269.95 now $190.95 at Amazon

Save $79 on a pair of the best binoculars for stargazing, the Celestron Nature DX 12x56 are 29% off at Amazon. Their impressive 12x magnification and large 56mm objective lenses are an ideal combination for stargazing and for spotting wildlife.

Read our full Celestron Nature DX 12x56 review

Occer 12x25: was $59.99 now $23.40 at Amazon

Save $42 on these compact binoculars for kids. We think they're great portable binoculars thanks to their compact form and light weight, ideal for taking on camping trips and throwing them into your backpack — we gave them 4/5 stars in our Occer 12x25 review.

Make sure you add the 35% coupon to get them for this price.

Read our full Occer 12x25 review

Celestron SkyMaster Pro 15x70: was $259.95 now $189.95 at Amazon

Save $70 on a pair of the best stargazing binoculars that are well suited to lunar viewing even without a tripod, all thanks to their powerful 15x magnification and 70mm objective lenses that drink in the low light from the moon's surface.

Vortex Optics Crossfire HD 10x42: was $229.99 now $123.73 at Amazon

Save 45% on a pair of binoculars with bright, sharp views and a very usable magnification for all-purpose viewing. They're waterproof and fogproof, plus they come with a padded carry case.

They also come in 8x42, 10x50 and 12x50 variants.

Bushnell Excursion 10x42: was $104.95 now $44.99 at Amazon

Save 57% in this 10x42 binocular deal from Bushnell. Waterproof, fogproof and versatile, they're the ideal optic for birdwatching and wildlife observation to stargazing and sports games without breaking the bank.

Nikon Prostaff P7 10x42: was $199.95 now $166.95 at Amazon

Save $33 on these durable, compact and lightweight 10x42 binoculars from Nikon with great optics for the price. They have bright, clear and sharp views with minimal color fringing, plus they're waterproof and fogproof.

Read our full Nikon Prostaff P7 10x42 review

Nikon Prostaff P3 10x42: Was $149.95, now $126.95 at Amazon

Save 15% on the Nikon Prostaff P3 10x42 binoculars. We gave 4/5 stars to the Prostaff P3 8x42 which are identical except for the difference in magnification. We were impressed by their optical quality for the price, and the 42mm objectives are good for generalist use and birdwatching. They're also waterproof and fogproof.