1、Stable Performance: Wireless earbuds with advanced bluetooth technology owns fast and stable transmission without tangling, which makes the Bluetooth earbuds connect to electronic devices more consistently. 2、Ergonomic Design: Wireless earbuds have a semi open design that does not touch the ear canal and fits snugly in the ear, with a rounded shape that makes them more comfortable to wear for long periods of time and secure without feeling pressurised. 3、Unique Design: Bluetooth wireless earbuds use 1.13mm/0.4in large speaker unit, semi open in ear in the same external volume size, than the traditional in ear internal cavity space, more utilization, can be put into 13mm/5.1in large speaker, the sound quality is strong. 4、Superior Quality Sound: Bluetooth Earbuds feature ultra low frequency bass heavy technology, AAC HD decoding, high performance magnets and a 6UPEEK+10PU composite diaphragm for better listening and comfort. 5、Excellent Listening Experience, Long Lasting: Bluetooth headphones can provide you with an uninterrupted calling and music experience and noise cancellation. The rechargeable battery compartment has a capacity of 300mAh for longevity. Item Type: Wireless Bluetooth Earbuds Material: ABS Shipped with Built in Battery Battery Type: Lithium Battery Charging Compartment Battery Capacity: 300mAh (Built in) Headset Battery Capacity: 30mAh (Built in) 1 x Wireless Bluetooth Earbuds (Battery Included)