Thank you for viewing. These wireless earbuds boast high-quality sound tuned by AKG and up to 11 hours of battery life, with Qi-compatible wireless charging. - Model Name: Galaxy Buds+ - Bluetooth Version: Bluetooth 5.0 - Sound Quality: AKG Tuning - Charging Method: Wireless Charging Compatible - Battery Life: Up to 11 hours - Call Function: Hands-free calling supported - Waterproof Performance: IPX2 Used for about a year. Operation has been confirmed. If you are okay with a used item, please consider purchasing.