Product: Get these Sports Neck-Mounted Bluetooth Wireless Headphones today! Standby Time: About 160 hours. Perfect: For taking with you on journeys or wearing during a gym session. Bluetooth Chip and Bluetooth Version: 5.0. Features: An adjustable volume system, ability to decline/answer calls using the button, and an incoming voice reporting function. Languages: Avaiable in English and Chinese. Listening Time: Up to 5 hours. Colours: Available in red or black. | Sports Neck-Mounted Bluetooth Wireless Headset - Black | Wowcher