Celestron - Electric Power Zoom 8-24x25 Binocular

Compact porro prism design that makes changing power quick and easy with the electric zoom buttons. Features a 8-24 power zoom
with a 25mm aperture and compact package. Operates with 2 AAA batteries (user supplied).
Fully Coated Optics
High
Quality BK-7 Prisms
Water Resistant
Electric Power Zoom - 8 to 24 Power
Soft Carrying
Case
No-Fault Lifetime Warranty
OPTICAL DESIGN: Porro 
DIAMETER: 25 mm (0.98
in)
MAGNIFICATION: 8-24 Zoom x
PRISMS: BK-7 
OPTICAL COATINGS: Fully
Coated 
ANGULAR FIELD OF VIEW: 4.4 °
LINEAR FIELD OF VIEW (@1000 YDS): 231 ft (70.41
m)
EXIT PUPIL: 3.1 mm (0.12 in)
EYE RELIEF: 10 mm (0.39 in)
NEAR
FOCUS: 16 ft (4.88 m)
WEIGHT: 12 oz (340.19 g)