About Product: Product Name: Hoco - Bluetooth Over-Ear Headphones (ESD15) Features: 🔵 Latest Bluetooth V5.3 Technology: Powered by the JL AC6925F chip for seamless, lag-free connectivity. 🔊 Dynamic 40mm Speaker: Enjoy rich, clear audio with immersive sound quality. 🔋 Efficient Power: Equipped with a 400mAh battery that charges in just 2 hours. ⏰ Extended Playtime: Provides up to 12 hours of continuous call and music playback. 🔋 Ultra-Long Standby: Keeps your headphones ready for use with an impressive 180-day standby time. 💾 Expandable Storage: Supports TF cards up to 32GB, so you can carry your favorite tunes wherever you go.