A crowd of old people have hearing impairment. It is really awkward to ask for repeat again and again. If you， your relatives or your friends are strugling with hearing impairment， why not buy this professional hearing aid for yourself or the people you know to solve this embarrassing trouble? It has 4 kinds of adjustable volume for your free adjustment. High-grade material and ergonomic design ensure both good durability and excellent comfort. This hearing aid is easy for operation and convenient to carry. With it， you will get clear voice by yourself. For further information， please buy this Mini Behind Ear Sound Amplifier Volume Adjustable Digital Hearing Aid Audiphone with Earplugs! Features Suitable for people who has hearing impairment， helping you rediscover the happiness of listeningIts high quality microphone can filter the noise caused by air flow， keeping sounds clearerSmaller and lighter in size and weight， easier and more comfortable to wearIt is a superb gift for your relatives and friends4 kinds of volume is adjustable， "1" is the minimum volume and "4" is the maximumO" is for power off， "N" is for power onEarplugs in 2 different sizes can meet most of people’s needsA black box is provided， convenient for outdoor carrying Specifications Material Acrylonitrile &amp; Butadiene &amp; Styrene Copolymer <br>Dimensions (1.97 x 1.81 x 0.79)" / (5 x 4.6 x 2)cm (L x W x H) <br>Weight 0.32oz / 9g <br>Color Brown <br> Package Includes 1 x Hearing Aid2 x Earplugs1 x Component2 x AG13 Button Cells1 x Operation Manual