General

Model

Echo 10 30x21 Zoom
Optical Inc 6x18 T

Manufacturer

Brunton
Zeiss

Amazon rating

3.0
4.3

Customer reviews on Amazon

21
3

Basic Info

Type

Monoculars
Monoculars

Optical specifications

Prism Type

Magnification

10.0 - 30.0x
6x

Objective Lens Diameter

21 mm
18mm

Angle of View

6.9

Field of View

178 - 10 ft (54 - 3 m) at 1000 yd
360' (120 m at 1000 m)

Exit Pupil Diameter

2.4 - 1.8 mm
3.0mm

Eye Relief

12 mm
15mm

Minimum Focus Distance

10 ft (3 m)
1.0' (0.3 m)

Interpupillary Adjustment

Dioptric Correction

Focus Type

Physical specifications

Waterproof

Fogproof

Power Source

Dimensions

4.25 x 1.25" (11 x 3 cm)
1.2 x 3.7" (30 x 94mm) WxH

Weight

3.2 oz (91 g)
0.13 lb (58g)

Tripod Socket

Packaging Info

Box Dimensions (LxWxH)

7.4 x 6.1 x 2.75"
5.7 x 4.1 x 2.7"

Package Weight

0.35 lb
0.5 lb