But the operation of a wrist unit is complex, he noted.

She stood in the mark and took bearings through her wrist unit.

"I've found it," she announced, then looked at her wrist unit.

I've been trying to reach Bat for the past quarter of an hour on my wrist unit.

Once she left the office, she made notes on her wrist unit.

She took a moment to settle them, then glanced at her wrist unit.

What the hell was taking so long, she wondered, and checked her wrist unit once again.

"You're telling me now," he pointed out and glanced at his wrist unit for the time.

She took a quick look at her wrist unit.

His wrist unit was Swiss, which is to be expected.