Side Release Whistle Black Buckle For 3/4" Strap Survival Bracelet

65 cents - free shipping from eBay seller martin_you. Took a few weeks to get here from China. No idea how the guy can sell this and ship it for 65 cents from China. Looks like a decent plastic buckle. Whistle not real loud. Better than yelling for help though.

Wilderness Survival 3-in-1 Kits with Whistle + Compass + White LED Flashlight (4*LR41), Color Random

Whistle, compass, flashlight. Meritline - $1.99 shipped from China. Came with batteries. Whistle is not real loud. Compass maybe 3/8" in diameter.