Foldable Wireless Headphones Compatible With Amazon Fire HD 8 / Plus (10th Gen 2020 Release), Amazon Fire HD 10 / Plus (11th Gen 2021 Release) — Dual 40mm Drivers, HD Mic, 300mah Battery (8 hours) + 3.5mm Wired

Powerful, balanced audio from dual 40mm large-aperture driver units delivers deep, accurate bass, clear vocals and crisp highs across an extended frequency range. Over-ear noise isolation pads and a lightweight, ergonomic build provide superb sound quality and comfortable long-wear listening. Built-in hd microphone and hands-free controls let you take high-definition calls with a stable connection and faster transmission speed. The adjustable headband adapts to different head sizes and the fold-able design makes storage and transport easy. A rechargeable 300mah battery gives up to 8 hours of wireless playing or calling; for unlimited wired playing the headphones include a 3.5mm audio cable for wired use.