ALPEN OPTICS Chisos 10×25 ED – Binoculars with PXA Coating | BaK-4

ALPEN OPTICS · Binoculars · ED

ALPEN OPTICS Chisos 10×25 ED – Compact Binoculars | Roof Prism | BaK-4 | IPX7

10×25 magnification · ED glass · BaK-4 roof prism · PXA phase coating · UBX fully multi-coated · 114 m field of view at 1’000 m · 2.5 mm exit pupil · IPX7 waterproof · nitrogen purged · 265 g · polycarbonate housing · twist-up eye cups.

10× power in your pocket – detail-rich ED optics on the go

The ALPEN OPTICS Chisos 10×25 ED delivers 10× magnification in a body that weighs just 265 g and fits into a jacket pocket. Extra-low dispersion (ED) glass elements virtually eliminate chromatic aberration, producing sharp, colour-true images across the entire field. BaK-4 roof prisms with PXA phase correction coating and UBX fully multi-coated optics push light transmission up to 95 %, ensuring bright, high-contrast views even in challenging light. A 114 m field of view at 1’000 m gives you a generous panorama, while the 5 m close focus lets you observe butterflies and flowers in fine detail. Whether you are identifying birds from a hide or scanning a stadium from the stands, the Chisos 10×25 delivers the reach you need without the bulk.

10× magnification meets 25 mm compactness – reach without weight

A 10× magnification factor pulls distant subjects close, making the Chisos 10×25 ideal for sports events, wildlife observation and travel. Despite the higher power, the 25 mm objectives keep the body ultra-compact at 106 × 101 × 47 mm. The twilight factor of 18.33 and brightness index of 27.56 confirm that this pocket binocular punches well above its size class, delivering usable images even as daylight fades.

IPX7 waterproof & nitrogen purged – built for the elements

The Chisos 10×25 is sealed to IPX7 standards, surviving immersion in up to 1 m of water for 30 minutes. Internal nitrogen purging prevents fogging when moving between temperature extremes. The polycarbonate housing with rubber armouring absorbs shocks and provides a secure grip even in wet conditions. With an operating range of −10 °C to +50 °C, these binoculars handle anything from alpine snow to tropical humidity.

Key features – ALPEN OPTICS Chisos 10×25 ED

• 🔍 10×25 compact roof-prism binoculars – fits in a jacket pocket
• 💎 ED glass elements – virtually eliminates chromatic aberration
• ✨ PXA phase correction coating on BaK-4 prisms – enhanced contrast & resolution
• 🔦 UBX fully multi-coated optics – up to 95 % light transmission
• 🌍 114 m field of view at 1’000 m (6.5°) – wide panoramic view
• 💧 IPX7 waterproof + nitrogen purged – fog-free in all conditions
• ⚖️ Only 265 g – ultra-lightweight for all-day carry
• 👓 Twist-up eye cups – comfortable with or without glasses
• 🎯 5 m close focus – ideal for butterflies & flowers
• 🧳 Nylon carry case with dust caps included

Who is the ALPEN OPTICS Chisos 10×25 ED for?

The Chisos 10×25 ED is designed for outdoor enthusiasts who want 10× reach in a pocket-sized package: hunters who need detailed observation at longer distances, birders spotting from hides and trails, hikers who want more magnification without extra weight, sports fans seeking a sharp view from distant seats, and travellers who want a powerful yet compact optic for sightseeing and wildlife encounters.