: Mini size and lightweight design make you more comfortable to wear. Weight about 2g, compact and portable, ergonomic design, not easy to fall off. You can barely feel it's there.: Designed in a sleek and exquisite body, our sound amplifier make you just look like an ordinary person with the stylish earbuds. No embarrassment when talking with others.: They provide up to 10 hours working time for one charged, and the charging box provide 4 extra recharges. (Sound amplifier can be full-charged within 2-3 hours,charging box can be full-charged in 90 minutes): 4 adjustable amplification modes brings an excellent hearing experience for you. 3 shape earplugs are in the package which can fit most people.: Our amplifier feature a smart chip and balanced armature speakers, which are very conducive to noise reduction, offering people with mild and moderate hearing function a clear conversation.