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XREXS Electronic Whistle Alarm Review More Info and Purchase: Buy Me A Coffee: Blog: This is an electronic noise alarm which offers a choice of three electronic alert sounds, all very loud and impossible to ignore. The design is sports orientated with a lanyard attached to allow it to be hung around the neck when not in use. It would be perfect for a referee, teacher, or anyone needing to gain attention in an outdoor space very quickly. In the box, you receive the alarm itself with a lanyard string attached, 4 CR2032 batteries (installed), a tiny reset pin, a carry bag and a short and rather unnecessary user guide. Build quality is lightweight but acceptable for the £ pre-discount price, The alarm is inches long by inches across and although quite lightweight at around 75g, it sits nicely in the ha
