ScubaPro Tank Banger
¥2,700 JPY
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OVERVIEW
Making noise under water doesn't get any simpler than this.
- Elastic band, made of surgical tubing, is fitted with a hard plastic ball.
- Stretch the band over your scuba tank.
- To get your buddy's attention, reach back, grab hold of the ball, pull it away from the tank, and let it go.
- The clang is sure to turn heads.