Product Features: True Wireless Stereo: Portable Stereo Sports Headphones, Sports Headphones Lightweight Earbuds with Microphone for iPhone Samsung HTC LG and other Bluetooth devices The most advanced headphone design: Best Bluetooth Headphones for Fitness. Perfect for walking, jogging, hiking, cycling, fitness and several other activities. Excellent sound quality: High quality chip for stereo and bass. Clear high and low volume. Taking and making calls is easy, and voice dialing has excellent microphone quality. Perfect for car calls, chatting with friends, or work use. CVC Noise Cancellation Technology: It has excellent noise cancellation technology and uses CVC deep noise reduction. Bilateral stereo APT-X lossless sound quality, deep bass brings shocking enjoyment to your ears. The sound hole design reduces sound wave echo, making the sound chamber purer and making high, mid and bass more harmonious. Long battery life: Built-in 300mAh battery box, can charge two true wireless earphones 3 times, no charging cable required, up to 9 hours of music or talk time, you never have to worry about the battery of your wireless earphones running out. COMFORTABLE AND SAFE: Ergonomically designed with gel silicone ear tips, ensuring your headphones are comfortably and securely held in place, ensuring no fatigue for your ears Specifications: Type: In-ear Transmission distance: 10 meters Music time: About 5 hours Standby time: About 100 hours Earbuds battery capacity: 50mAh Charging box battery capacity: 300mAh Charging time: about 1-2 hours Auto start and pairing: Yes Functions: Music play/pause, call answering Noise reduction Color: Black Packing list: 2 x Bluetooth earbuds 1 x Charging case 1 x Charging cable 1 x User Manual Bluetooth 5.0 Bass True Wireless Earphones, Sports Wireless Earbuds, Built-in Microphone for iPhone, Samsung, Android Phones True Wireless Stereo: Bluetooth 5.0. Portable Stereo Sports Headphones, Sports Headphones Lightweight Earbuds with Microphone for iPhone, Samsung, HTC, LG and other Bluetooth devices Excellent sound quality: built-in microphone, high-quality chip for stereo and bass. Clear highs and lows. CVC noise reduction technology: Using CVC deep noise reduction, it has excellent noise reduction technology