✅Nearly Invisible - tiny, lightweight, low profile discreet design ✅Receiver in Ear - natural sound, less feedback, and long time wearing comfort ✅Rechargeable Power - 1.5 hours quick charging time lets you enjoy 20+ hours of continuous, stable and uninterrupted use throughout your day. ✅Hearing in noise - on-body volume control. Ideal for indoor, outdoor and hunting. Adaptive feedback cancellation. ✅Water Resistant - IP65 level slash proof ensuring working in challenging environments like raining and sweating Instruction videos. Stabilizer bar (sport locker). Innovative Receiver in Ear (RIE) Design RI# Tech Specs Full Charging time: 1.5 hrs Working time per charge: 20 hrs Maxim sound gain: 40 dB IP65 splash proof Dimensions. They might be too comfortable that they are actually easier to lose: if you are not used to feeling you are wearing them, you may not notice when they are gone. What is the RIE model? The receiver ( speaker ) rests in the ear, rather than being contained in the body of the hearing instrument. The speaker is connected to the body by a thin wire. Benefits Provides best sound quality with less distortion. Amplifies high-pitched tones exceptionally well. Comfortable to wear with open domes, allows air and natural sound coming in the ear_canal. Less feedback with less occlusion. Small and discreet. Dual Microphone Noise Canceling Equipped with TWO directional microphones that provide more amplifications for the sound coming in from the front. This will greatly reduce the background noise when you are in a noisy environment and let you enjoy a clear conversation. Super Quick Recharge With our super quick charging technology, the RIE400 can be fully charged in only 1.5 hours and provides 20 hours of usage. No more buying and replacing batteries. With a 30mAh sealed Lithium Polymer Battery, this device is extremely safe and durable to use Water Resistant Most of the hearing Aids are very sensitive to moisture and water and they can be easily damaged in a moisture environment. The EarCentric RIE400 is designed to be IP65 Water resistant (splash proof) to keep the device functioning in a wetness environment --- no need to worry about sweating and raining anymore. Newly updated longer wires.