This gadget Tile Sport is a bluetooth tracker device that can be attached to you important things in case you lose them.

Pros:

• the gadget is waterproof
• it has a long range detection
• the volume is loud
• multiple ringtones

Cons:

• the price, 30$ for 1 piece is kinda high, you can find similar gadgets for less then 30$, the only
  way the price is ok is if you buy a pack of 4 for 70$ or a pack of 8 for 135$, gather some friends and buy a pack for a nice price per gadget

Nice hunt @pakyeechan! You got a nice gadget here.