General

Model

10x25 Blackhawk
Echo 10 30x21 Zoom
10x42 Monarch 3

Manufacturer

Barska
Brunton
Nikon

Amazon rating

3.7
3.0
4.5

Customer reviews on Amazon

213
21
244

Basic Info

Type

Monoculars
Monoculars
Binoculars

Optical specifications

Prism Type

Roof

Magnification

10x
10.0 - 30.0x
10x

Objective Lens Diameter

25mm
21 mm
42mm

Angle of View

5.8
5.7

Field of View

303' at 1000 yd (101 m at 1000 m)
178 - 10 ft (54 - 3 m) at 1000 yd
299' at 1000 yd / 99.27 m at 1000 m

Exit Pupil Diameter

2.5 mm
2.4 - 1.8 mm
4.2

Eye Relief

11 mm
12 mm
17.4

Minimum Focus Distance

13 ft (4 m)
10 ft (3 m)
9.8' / 2.99 m

Interpupillary Adjustment

57 - 72 mm / 2.24 - 2.83"

Dioptric Correction

Focus Type

Center

Physical specifications

Waterproof

Fogproof

Power Source

Dimensions

1.25 x 1.25 x 4.25 (3.2 x 3.2 x 10.8 cm)
4.25 x 1.25" (11 x 3 cm)
6.1 x 5.1 x 2.1"

Weight

5 oz (142 g)
3.2 oz (91 g)
24.7 oz

Tripod Socket

Packaging Info

Box Dimensions (LxWxH)

5.0 x 2.2 x 1.9"
7.4 x 6.1 x 2.75"
7.8 x 6.5 x 3.9"

Package Weight

0.35 lb
0.35 lb
2.2 lb