JBL Tune 510BT Wireless Over-Ear Headphones – 40-Hour Battery + Pure Bass Sound + USB-C Charging – Black Powerful sound, long-lasting comfort, and a battery lasting up to 40 hours 🎧 Comfortable listening experience with deep bass all day • 🔋 Long battery life with quick charging for continuous performance • 🎶 JBL Pure Bass with clear sound and effective design