EARS SECRET Ear Plugs Highest Sound Insulation Value for Sleeping For Study for Factory NRR33dB SNR38dB Soundproofing Sound Insulation 25+3 Pairs Big

【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.

【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary.

【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product.

【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer.

[3 pairs of trial included] EARS SECRET Sunshine are large earplugs recommended for sleeping.In order to fit ear canals of various sizes, EARS SECRET offers trial earplugs in 3 shapes from large to small, making it a trial pack of 25 pairs + 3 shapes. [NRR 33dB] Achieves 33dB NRR (Noise Reduction Rate) in accordance with ANSI S3.19-1974, has excellent sound insulation performance, and is suitable for snoring, neighbors, children, dogs and cats, motors, shooting, concerts, loud events, and study.It can be used in a variety of situations such as training, dormitories, workshops, etc., and is a reliable companion for hearing protection and noise canceling. [Moderate Resilience] Thanks to the excellent quality and PU foam workmanship, EARS SECRET earplugs can be compressed into a cylinder with a diameter of 0.5-0.7mm, retain their shape for more than 1-2 minutes, and fully expand in the ear in about 1 minute (hours(depending on temperature and humidity).Excellent resilience allows it to fit a wide range of ear sizes [Comfortable to wear] The surface has been treated to make it smooth, giving it a soft feel. The earplugs grip comfortably in the ear canal and do not cause the discomfort of ear blockage. Even if you wear it multiple times, earwax won't build up and you can keep it clean. [Specifications] Packaging: paper box. Contents: 25 pair pack