LED圓形徽章別針（紅色）

Bought these for a concert and the steady red glow was perfect for keeping track of my group in the crowd. The blink and flash modes are fun too, and the two batteries were already installed so it worked right out of the package.

Took this to a friend's Halloween party and the blink mode got tons of compliments—way more fun than a regular pin. It came with the batteries already inside and has lasted through a whole weekend of flashing.

The steady mode is perfect for a night out, and the red light is bright without being harsh. For the price, having replaceable batteries included was a nice surprise.