General

Model

Echo 10 30x21 Zoom
Optics Viper HD 10x42

Manufacturer

Brunton
Vortex

Amazon rating

3.0
4.7

Customer reviews on Amazon

21
290

Basic Info

Type

Monoculars
Binoculars

Optical specifications

Prism Type

Roof

Magnification

10.0 - 30.0x
10x

Objective Lens Diameter

21 mm
42mm

Angle of View

6.1

Field of View

178 - 10 ft (54 - 3 m) at 1000 yd
319' at 1000 yd / 105.91 m at 1000 m

Exit Pupil Diameter

2.4 - 1.8 mm
4.2

Eye Relief

12 mm
16.5

Minimum Focus Distance

10 ft (3 m)
5.1' / 1.55 m

Interpupillary Adjustment

59 - 75 mm / 2.32 - 2.95"

Dioptric Correction

Focus Type

Center

Physical specifications

Waterproof

Fogproof

Power Source

Dimensions

4.25 x 1.25" (11 x 3 cm)
5.8 x 5.3 x 1.65"

Weight

3.2 oz (91 g)
24.6 oz

Tripod Socket

Packaging Info

Box Dimensions (LxWxH)

7.4 x 6.1 x 2.75"
8.75 x 7.3 x 4.1"

Package Weight

0.35 lb
2.45 lb