binoculars; field glasses
Standard term for binoculars used for birdwatching, stargazing, sports events, etc.
バードウォッチングに双眼鏡を持っていく。
I take binoculars for birdwatching.
コンサートで双眼鏡を使って歌手をよく見た。
I used binoculars at the concert to see the singer well.
I looked at a bird in the distance through binoculars.
He peered through his binoculars to observe the mountain.