The Wireless Bluetooth 5.4 Headset TWS Earphones by Vibehaven are designed with a double earpiece and an ear-hook form factor for a secure and comfortable fit. With a 50mAh battery capacity in each earbud and a 500mAh capacity in the charging box, this headset offers about 120 hours of standby time. The features include Bluetooth connectivity, replaceable ear tips, call functions, echo cancellation, noise cancellation, rechargeable battery, extra bass, HD voice, stereo sound, and a built-in microphone for convenient hands-free communication. A sleek black design adds a stylish touch to these high-quality stereo headphones.