Sakura is a very common cheap brand on eBay
according to which:
BRAND NEW SAKURA 20x180x100 MEGA ZOOM Binoculars
TRIPOD ADAPTER INCLUDED
A rare opportunity to purchase these great quality binoculars at rock bottom prices.
Specifications:
* Superior Japanese technology
* 20-180x 100 zoom magnification
* Bak4 prisms
* Objective lens diameter: 100mm
* Brightness: 25.00-15.25
* Twilight factor: 22.36-39.80
* Multi coated optics
* Rubicon coated lenses
* Dioptric correction
* Smooth centre focusing
* Built in tripod anchor
* Rubber armoured water resistant housing
* Fold down eyecups for spectacle wearers
Includes:
o Travel case
o Lens polishing cloth
o Neck strap
o 4 lens caps
Some of this model are silver/black, as per attached pics, others appear to be wholly black. Almost certainly Chinese-made, given the price range they typically sell at.