JTT Online Hearing Aid USB Rechargeable In-Ear Ultra-Small Fukumimi Chiisaion (Fukumimi Chiisaion) BA Type Speaker Discreet Ultra-Small Lightweight 2g In-Ear Both Ears FUKUMICHSA I bought this for my grandfather, but he didn't use it. I opened it, but I disinfected it and stored it. Purchased in January 2025. I confirmed it powered on on October 1st. [Ultra-small in-ear hearing aid that is inconspicuous when worn] "Fukumimi Chiisaion" is an in-ear hearing aid characterized by its ultra-small size. It fits perfectly in the ear canal, so it is not noticeable when worn. It is also ultra-lightweight, weighing about 2g, making it less tiring even with long-term use. [Equipped with a BA type speaker that makes human voices easy to hear with high sound quality] The speaker unit that outputs sound uses a "balanced armature (BA) type" driver unit, which is also used in high-end earphones. It has higher sound reproduction than the "dynamic type" unit used in general hearing aids, and can output clear and easy-to-hear high-quality sound. [Color universal design to prevent mistakes in left and right ear placement] To prevent mistakes in left and right ear placement, the hearing aid is color-coded (black and beige) so that people with poor eyesight or color blindness can easily distinguish between left and right. The charging case is also color-coded and has kanji characters indicating left and right so that the hearing aid can be placed and charged without making a mistake. [Compact yet full of stamina, continuous use for up to 14 hours] Chiisaion is a hearing aid with a stamina setting that allows for continuous operation for up to 14 hours, despite its ultra-small compact size. Furthermore, if you return the hearing aid to the charging case and recharge it, you can use it for a longer time. [Built-in rechargeable battery, can be recharged by connecting to USB] By setting the hearing aid in the charging case and connecting the included charging cable to the USB terminal, you can recharge the built-in battery. [Automatic power ON/OFF function to reduce the user's operational burden] When the hearing aid is removed from the charging case, it automatically turns on after 12 seconds, and when it is returned to the charging case, it automatically turns off. This eliminates the need for the user to manually turn the power on and off, and the 12-second time lag before the power turns on prevents howling when the hearing aid is worn.