Comfortable Earhook Original Designed for Sport: Unlike ordinary in ear earbuds, wireless earphones are designed with soft, flexible and secure fit ear hooks aimed at fully fitting your ears without falling out even for intense workouts. Adjustable and secure-fit silicone ear hooks and ergonomic design ensure your sports earbuds stay comfortably firm in place when doing sports, running, hiking, jogging and other outside activity etc.Bluetooth 5.1 and One Step Pairing: Adopt the latest bluetooth 5.1 chip and technology delivers a more stable and faster wireless connection to your device. When taken out from the charging case, wireless headphones will pair automatically and reconnect the most recently connected bluetooth device, allowing you to use them with no hassle. After first time connected, the wireless headset will automatically pair with your smart device.Long Battery Life: Sport bluetooth earbuds uses low power design, ensures more than 250 hours of long standby time. Up to 10 hours playtime of normal usage on a single charge and boost that to 40 hours playtime with the 950mah compact charging case. And unique intelligent digital display for easy check of battery capacity. You have the state of charge of your sport earphones under control at all times.Stereo Sound Quality: The unique stereo sound quality and design gives you the perfect sound, and you can feel the more realistic music. These wireless in ear hook earbuds are well balanced with bass and let you feel the charm of music more immersively. Cvc 8.0 noise canceling headphones, filter out background noise,ensures a clear listening experience for phone calls from stable signal and lower power consumption.IP7 Waterproof: This bluetooth headphone with mic is constructed with ip7 waterproof standard, can boost the enjoyment even on a rainy day. With nano coating, waterproof earbuds can fend off sweat and it is a good choice for strenuous workouts and all weather conditions. Be worry free from sweat, heavy rain or spilled liquid and enjoy music anywhere at anytime. Note: This product authorized by Donerton factory, so the brand of product package is Donerton.