General

Model

Echo 10 30x21 Zoom
Optical Inc 10x25 T

Manufacturer

Brunton
Zeiss

Amazon rating

3.0
4.0

Customer reviews on Amazon

21
7

Basic Info

Type

Monoculars
Monoculars

Optical specifications

Prism Type

Magnification

10.0 - 30.0x
10x

Objective Lens Diameter

21 mm
25mm

Angle of View

5.0

Field of View

178 - 10 ft (54 - 3 m) at 1000 yd
264' (88 m at 1000 m)

Exit Pupil Diameter

2.4 - 1.8 mm
2.5mm

Eye Relief

12 mm
15mm

Minimum Focus Distance

10 ft (3 m)
14.8' (4.5 m)

Interpupillary Adjustment

Dioptric Correction

Focus Type

Physical specifications

Waterproof

Fogproof

Power Source

Dimensions

4.25 x 1.25" (11 x 3 cm)
4.3" (109mm)

Weight

3.2 oz (91 g)
0.19 lb (88g)

Tripod Socket

Packaging Info

Box Dimensions (LxWxH)

7.4 x 6.1 x 2.75"
5.748 x 4.016 x 2.598"

Package Weight

0.35 lb
0.65 lb