Bluetooth Single 3g Both Left and Right Portable Conformity Compatible with Japanese Instructions Ear (Stealth Version) Earphones, 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. [Stealth design & for both left and right ears] The main body weighs only 3g, the earphones are small in shape, and the size is only (1.8 x 1.6 x 1.2) cm, making them small and difficult for someone to find. The design can be worn comfortably on both left and right ears. It is so comfortable that you will forget you are wearing it, and it will not burden you even if you use it for a long time. You can enjoy hands-free and music while driving, commuting to work or school, working, and exercising. [With rechargeable storage case & IPX5 waterproof] With 260mah charging case, not only can you prevent the Bluetooth earphones from being lost, but you can also charge them repeatedly at the same time. The earphones can be charged three times. Enjoy 3 hours of continuous music playback/5 hours of continuous calls, with a standby time of 150 hours. You can use it with confidence without worrying about running out of power. The charging case for the earphones is palm-sized and can be put in your pocket. IPX5 waterproof protection grade equivalent to "waterproof and sweatproof for everyday life", protects the earphones from sweat, splashes, rain, etc. Ideal for active scenes such as sports and exercise. You can listen comfortably even while exercising [Excellent Bluetooth 5.0 & Automatic Pairing] You can enjoy calls and music with clearer sound quality even wirelessly, and it is less tiring. In addition, it can support up to two Bluetooth-equipped devices at the same time, so you will not miss important calls, information, emails, etc. from two smartphones. You can experience easy, fast and uninterrupted pairing connection. When you turn on the earphones, they will automatically enter the Bluetooth pairing setting state. Connect to "SQRMINI-X20" with your smartphone and enjoy high-quality communication and music without waiting. When you restart the earphones, they will automatically connect to the last connected device. [One-button design & half-canal type] The one-button design allows you to operate it with one hand. With the on button, you can play/pause music, play the next song, start/end/reject/redial calls, and more. The half-canal type fits your ears, minimizing the burden on your ears, so you can wear them for long periods of time without feeling any strain, and you can use them while on the move without worrying about dropping them. [Compatibility & Quality Guarantee] Compatible with all devices with Bluetooth function. For example: iPhone X/8/8 Plus/7/7 Plus, Samsung Galaxy. Although we do thorough testing during production and shipping. If there is a quality problem with normal use within 3 months, we will exchange it for a new one free of charge. Please contact us through your order history via Amazon. How to contact us: While logged in to Amazon, open the order history in your account service and click "Contact seller" on the right side of the relevant order. To contact the seller, 1. Regarding poor charging: ① Soak a tissue in rubbing alcohol and wipe the entire case and the entire device. ② To clean thoroughly, please carry out step 2 at least twice. 2. Regarding no sound or no communication: ① Try increasing the volume ② Stop other running apps ③ Check the Bluetooth connection ④ Check the audio output destination ⑤ Try restarting the iPhone 3. Regarding the sound being so quiet that you cannot hear it even when the volume is set to maximum: ① Launch "Settings" and tap "Music" ② Check "Volume limit" and tap if it is on ③ Move "Maximum volume" all the way to the right