bone conduction earphones swimming IP68 fully waterproof headphones that don't block your ears Bluetooth & MP3 mode 32G Built-in memory open ear

【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.

[IP68 waterproof standard, completely wireless]: MASTJUST's newly developed bone conduction earphones for swimming have the highest waterproof performance, and with a waterproof and dustproof body that complies with IP68, they can withstand complete submersion up to a depth of 2 meters.In addition to swimming in the pool, it is also suitable for water activities such as surfing and SUP.Since these are completely wireless bone conduction earphones, there are no cables to connect the earphones to your audio device, so you can use them comfortably whether you connect them via Bluetooth or switch to MP3 mode.Of course, it is resistant to sweat, so you can use it for running without any problems. [Open ears, comfortable fit]: Adopts an open ear design that provides a comfortable fit and hold that does not cause pain, and will not slip even under water resistance.The bone conduction headset's ultra-light body of 28g makes it comfortable to wear and won't hurt your ears whether you're on land or underwater.Even when running, you can hear surrounding noises such as cars and bicycles, so you can run safely, and you can run while playing music as background music. [Bluetooth 5.3 & MP3 Mode]: Equipped with Bluetooth mode and MP3 mode, Bluetooth earphones can easily switch to MP3 mode by clicking the power button twice in succession.or you can switch toFurthermore, it is equipped with a large capacity memory of 32GB and can store up to 6000 songs.(You need to connect to a PC to transfer music files.) It's extremely light and comfortable to use when you're doing sports such as running or swimming outdoors, as you don't need to carry your smartphone with you. [12 hours of continuous playback/long life]: The bone conduction Bluetooth wireless earphones have a built-in 250mAh large capacity, and after being fully charged for 2 hours, you can use music and calls for up to 12 hours, and even just 10 minutes of charging will last 1.5 hours.Since it can run for several minutes, you can now charge it and use it immediately even when you are in a hurry.You can enjoy a long day without having to worry about sudden cuts, not only for daily commuting, school, sports, gaming, running, and telework, but also for long bicycle rides, mountain climbing, etc. [Equipped with multi-point function and excellent operability]: Compatible with multi-point function and can be used for both work and private purposes.If you pair it with multiple devices such as your work computer or personal smartphone, you can seamlessly switch between them.You can respond to sudden calls or meetings without panic.In addition, it is equipped with four physical buttons, a power button, volume +/- adjustment buttons, and a multi-function button, making it easy to forward/return music, adjust the volume, and make calls.Achieves ease of operation.