It is mainly composed of sonar range finder which includes comprehensively surface instrument, subsurface equipment and different kinds of accessory.

该技术主要仪器为声纳测距仪，它包括地面仪器、井下仪器及各种辅助设备。

youdao

When paired with an iPhone, the phone becomes both a view-finder and an accessory that lets users share video clips by email, post to Facebook or upload to YouTube in real-time.

ENGADGET: Looxcie outs iOS-compatible lifecasting camera, early adopters get the boot