Common problems and responses caution: An adapter with an output voltage and current of 5V and 1A is recommended. For example: the standard power adapter of the Apple mobile phone, the USB interface of the computer. Do not use adapters or fast chargers whose output voltage and current exceed 5V 2.1A. Please unplug the chargers above 1A after they are fully charged, otherwise the charging box will be damaged. Question : Can't I charge my earphones? Answer : In the majority of cases, the problem is that there is a foreign object in the earphones that is not in line with the holes in the charger. 1.Check the two metal holes of the earphones for any foreign objects and wipe them with your hand or a cloth with alcohol. 2Please check if there is electricity in the charging case and charge it for more than 10 minutes. IPX5 Waterproof With IPX5 waterproof technology, Bluetooth headphones can easily resist sweat, Water and raindrops. Perfect for sports, Fitness, Running, Hiking, Yoga, Travelling, Driving or other outdoor activities to use these wireless earphones. Power display Check the remaining power of the headset in real time. The battery level of the headset will be displayed in the upper right corner of the phone, so that we can charge the headset in time. Pairing for the first time Start bluetooth on your smartphone, search for the available device "X23" and click on it. The headset will automatically connect to your smartphone's Bluetooth without pairing the second time you us Read more Basic operation Package include: 1xWireless Mini Earphones + 1xMini Charging Box + 1xUSB Micro Cable + 1xUser Manual Easy operation: Double-Tap : Increase volume Touch and Hold : Power on/off Triple Tap : Switch song--next song Tap : Pause music/play music To answer an incoming call : Tap on the headset (Tap on the headset again during a call will hang up the call.) To reject an incoming call : Touch and hold the headset for 2-3 seconds. Englis h, Chinese (switchable): (Bluetooth switch off required) Take the earphones, the red and blue lights will flash. Press the button twice in quick succession. Invisible Earbuds Invisible Earbuds Invisible Earbuds Invisible Earbuds Smallest Earbuds Invisible Mini Earbuds ✓ ✓ ✓ ✓ ✓ Touch ✓ ✓ Smallest Earbuds ✓ Purchase 25.98 32.98 21.98 32.98 32.98