Ergonomic Design - The shape of UrbanX k2 perfectly fits the curve of inner contour of ear. With round soft silicone ear tips, it can offer more wearing stability and comfort when in use. Whether you' re running or jumping, the earbuds will stay in ear securely. Advanced Bluetooth 5.0 Technology - Support HSP, HFP, A2DP, AVRCP. Provides in-call stereo sound. Greatly improve the transmission speed and providing you with a low-latency listening experience. Hi-FI Stereo Sound Quality - K2 acoustic experts focus on precise acoustic tuning and find out the best sound characteristics for human hearing sensitivity. Accurately adjust every detail to achieve a perfect balance of bass, midrange and treble Touch Control - Features with touch control sensors, UrbanX k2 Headset can largely minimize the pressure to your ears when you touch the panel for various functions. Upgraded Faster Charging - Enjoy fast charging, to fully charge the rechargeable case only 1.5 hours via fast charge USB-C cable Playtime lasts for over 6 hours from single charge and total 30 hours with charging case. Dual Purpose Charging Case And Power Bank - The charging case can also be used as a power bank to charge your phone when you are on the go.