Air analysis apparatus [ ; Batteries, electric; Battery chargers; Computers; Electronic pens; Megaphones; Navigational instruments for vehicles; Precision balances; Precision instruments for manipulation and positioning of microscopic objects; Precision theodolites; Scales; Smartwatches; Sound transmitting apparatus; Tablet computers; Theft alarms; Time recording apparatus; Wearable activity trackers; Weighing apparatus and instruments; Angle gauges; Anti-theft locks specially adapted to pers...