COMPBEAT (Mini Size) Bone Conduction Headphones Dual Bone Conduction and Air Conduction Retail Price: ¥13,800 Fully Waterproof Wireless Bluetooth 5.4 Microphone MP3 Player Sports Running Walking Swimming Cycling Work Headset Mini size that perfectly fits Japanese users This product delivers high-quality sound without compromise. - Brand: COMPBEAT - Model: BF-821G - Features: Dual performance (open ear/on ear) - Accessories: Instruction manual This item is like new, only tested for operation. Used for less than 5 minutes. Please check my profile.