IST magnetic shaker | Attention ⚠️⚠️⚠️⚠️! Grab the attention of ur buddy (only if necessary 😂😂😂) with these underwater shakers! Do music not noise! . . . . . #istsports... | By Waikiki Dive Centre | Facebook
Underwater aluminium shaker - DIVEAVENUE
Scuba Diving Dive Signal Shaker Rattle Noise Maker | eBay