General

Model

10x25 Blackhawk
10x25 Nature
Echo 10 30x21 Zoom

Manufacturer

Barska
Celestron
Brunton

Amazon rating

3.7
4.2
3.0

Customer reviews on Amazon

213
84
21

Basic Info

Type

Monoculars
Monoculars
Monoculars

Optical specifications

Prism Type

Magnification

10x
10x
10.0 - 30.0x

Objective Lens Diameter

25mm
25 mm
21 mm

Angle of View

5.8
5.8

Field of View

303' at 1000 yd (101 m at 1000 m)
304 ft (93 m) at 1000 yd
178 - 10 ft (54 - 3 m) at 1000 yd

Exit Pupil Diameter

2.5 mm
2.5 mm (0.1")
2.4 - 1.8 mm

Eye Relief

11 mm
14 mm (0.55")
12 mm

Minimum Focus Distance

13 ft (4 m)
18 ft (5.5 m)
10 ft (3 m)

Interpupillary Adjustment

Dioptric Correction

Focus Type

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)

Weight

5 oz (142 g)
6 oz (170 g)
3.2 oz (91 g)

Tripod Socket

Packaging Info

Box Dimensions (LxWxH)

5.0 x 2.2 x 1.9"
5.5 x 3.3 x 3.1"
7.4 x 6.1 x 2.75"

Package Weight

0.35 lb
0.6 lb
0.35 lb