Size: 2.1*1.38cm Battery Model: USB Rechargeable Volume Control: Knob Color: Blue for Left Ear ,Red for Right Ear Our amplifiers are small and flexible. Moreover, its charger is stylish and easy to travel. Looks like a bluetooth headset, makes you more confiden, no discrimination anymore. Package: 2 x Sound Amplifier 1 x Charging case 6 x different size Earplugs 1 x Manual 1 x Charging Cable 5 x Wax Guard 1 x Cleaning Brush If you have any requirements, please feel free to contact us. Your satisfaction is always our top priority, and we will do our best to ensure that you have an excellent customer experience.

?SATISFACTION GUARANTEED?:You receive our Satisfaction Guarantee. Any question will be answered within 24 hours; any complaint with our product, please contact with us. We will be responsible for the end. Contact us directly to return the goods for a full refund, no questions asked. ?Note?: Choose the correct size ear domes to prevent any feedback noise and howling. Clean your earpieces regularly to avoid any wax buildup. Wax affects the quality of the sound you since they tend to interfere with the sound. ?Including?: COMES COMPLETE WITH EVERYTHING YOU NEED. It come with a charging case, a USB charging cable, 3 ear domes (small to large), a cleaning brush, and Wax guards. ?Low power consumption?: This CIC is rechargeable and does not require the purchase of a spare battery. It consumes very little power .Just need 3 hours to charging, can be used for 15 hours. ?High quality?: The external and internal components of our equipment are made of top-grade materials to ensure higher quality and durability.