Makuakeで販売終了した、ヘルメット外部(後部)に取り付け骨伝導により内部に音を響かせるスピーカーです。詳しくは写真4,5,6の商品説明をご参照ください。SHOEIのGT Airに装着してツーリングで1回使用しました。使用したブラケットは一度剥がしているので、接着力は低下しています。あらためて両面テープを用意いただく方が良いかと思います。

Bear's Head Tooth Mushroom and other Edible Wild Hericium Mushrooms - AmericanMushrooms.com

Bear's Head Tooth – Hericium americanum | Foraging Pittsburgh

Fat of the Land: The Bear's Head

HEADTOOTH Pro: Group Voice Chat System For Motorcycle Riders by YEIL Electronics — Kickstarter

Bear's Head Tooth (Fungi of Northern Maine) · iNaturalist

Isabella Conservation District Environmental Education Program: Native Species Profile - Bear's Head Tooth Fungus

The Bear's head tooth mushroom, Hericium americanum (Fig. 64), provides... | Download Scientific Diagram

Hericium americanum

Another Bear's Head Tooth (Hericium americanum) near Pittsburgh | Foraging Pittsburgh

Bear's Head Tooth — Calder Wilds

HEADTOOTH Pro helmet communication system - Geeky Gadgets

Bear's Head Tooth Fungus | Naturally Curious with Mary Holland

Found Bear's Head Tooth for the first time (and lots of it!) : r/mycology

Bear's Head Tooth Mushroom Liquid Culture Syringe

Bear's Head Tooth - Hericium americanum