Review Of Rechargeable Electric Turbo Lighter V2 Black With Bov Sound References. Web the boost keychains rechargeable battery powered v5 turbo keychain spins, emits a spool up sound while holding the on button, and will emit 2 different blow off valve (bov) sounds when you release the button (off)! 73k views 5 years ago.

100+ lights on a full charge ; 2.8k views 6 years ago. Led light and bov sound.