①. Health Monitor & Activity Tracker It tracks your sleep, stress, heart rate, skin temperature, blood oxygen, activities, steps, distance walked and calories burned and multiple sport modes record. ②. Long Battery Life + Charging Box Our smart ring can stay with 5-7days, and it comes with a Charging Box which can charge the ring with 10times. If your charging box and ring both full charged, then you don't need more charging for about 30days, and this will ensure you to handle your body situation always for business travel or outdoor enthusiast. ③. Touch & Gesture Control The ring with a touch area that can help you touch for music control, short video control, e-book page flipping, hanging up on phone calls. And the gesture control for take photo or play games. ④. Free App Smart ring App is free without any subscription fee. The device supports Android 5.1 and iOS 8.0 or above. ⑤. Confirm Size Before Purchase Please refer to the size chart in the images to select the appropriate size for you. Note that the Smart Ring is intended for everyday health monitoring and is NOT a substitute for professional medical devices. ⑥. IP68 Waterproof The smart ring health tracker features IP68 waterproof rating, withstanding depths of up to 50 meters. Whether you're washing your hands, showering, swimming, or hiking in the rain, you don't need to remove the ring, allowing you to monitor your health data anytime, anywhere. ⑦. Indicator Light Reminder This smart ring is specially designed for women, with ceramics design and pink color, the indicator light can help you with reminder of female physiological / phone call / message / water drink / sedentary ...