SK31 Invisible 5.4 Bluetooth Wireless Earphones Sleeping Earbuds Work Sports Mini Headphones 4D HIFI Bass Sound Quality Headset

SpecificationModel:SK31Available system: Android&iPhoneBluetooth Version: V5.4Battery capacity: 30mAhUsage Time：About 5 hours（Earphones）Charging Time: About 1 hourFrequency Range: 2.402-2.480KHzTransmission Distance: Up to 10 meters / 33 feetLow Power Reminder: VoiceCharging Compartment Battery Capacity：300mAhPackage Included:2 x Bluetooth earphone1 x Charging Case1 x Charging CableFAQ1. Are they comfortable while wearing?Yes. The headphones are sized to fit most people's ear size and provide more convenience while maintaining comfort.2. Can I activate Siri voice controls with these headphones?Yes, you could activate Siri by long pressing the left earphone Button for 2 seconds.3. It has buttons to go to the next or previous song?Yes. Please Triple tap left earphone or right earphones.4. How do you answer a call?You could answer the call by double-clicking the left or right earphone, long press the left or right earphone for two seconds to reject the call, and double-click the left or right earphone to hang up5. Do they pair automatically with the phone or do I have to connect manually each time?Yes, of course. It will automatically connect with your device after first-time use.6. How long does it take to fully charge?Generally, 1 hours is enough to get it fully charged for earphones and 1.5 hour for earphones compartment.7. Does this have a built-in microphone?Yes, a built-in microphone is made for clear talks.8. It says they're waterproof, can you swim with them?No. It's just sweatproof. We don't recommend swimming with them.9. Is this sound leak serious?As long as the volume is not the maximum, there will be no leakage of sound. As for the health of the ear, you should also avoid using the maximum volume for a long time.10. What are the advantages of this earphone and is it worth buying?The latest design concept headphones for 2025. custom chip, AAC high-definition audio decoding.