[Newest 2018] Bluetooth Headphones w/ 12+ Hours Battery - Best Wireless Sport Earphones, Mic - IPX7 Waterproof Music in-Ear Earbuds Gym, Running, Workout Men, Women GREAT SOUND QUALITY WITH APTX+: high-fidelity stereo sound quality with aptx codec and CSR8645 chipset. These headphones are compatible with most smartphones, iPhone and Android. THE BEST BATTERY IN THE CLASS WITH UP TO 12+ HOURS PLAYTIME - New 2018 updated battery of 170mAh - provides Longest PlayTime Up to 12+ hours of continuous talking / music time and up to 240 hours of standby with a single charge for best sport or other experience, so you can enjoy long lasting music and less time charging. Wherever your day takes you, ELZU keeps your music. MORE STABLE CONNECTION WITH NEW BLUETOOTH 4.1 TECHNOLOGY:Compared to Bluetooth 3.0, 4.0, the latest version features faster & stable signal transmission, clearer sound quality and lower power consumption. FULLY WATERPROOF IPX7 PROTECTION - new wireless earbuds upgraded IPX7 sweatproof rating, prevent the headphones damaged from ordinary splashing water and rain. Keep the earphones working well no matter youre getting drenched in sweat after a grueling workout. SATISFACTION GUARANTEED + CUSTOMER SUPPORT 24/7: Our team of professionals is constantly working to make you happier with your decoration. We are confident in the quality of our product and give you a 100% money back guarantee within 30 days and great customer support. Please <span class="a-text-bold">charge </span>your <span class="a-text-bold">headphones when the battery is low</span> to achieve better Bluetooth connection and protect your battery Please <span class="a-text-bold">choose suitable ear tips and wear your headphone tightly</span> when you are running or cycling, <span class="a-text-bold">it will help you reduce the annoying wind noise</span> Please <span class="a-text-bold">use the standard 5V/1A charging plug to charge</span> the headphones Please <span class="a-text-bold">don&#039;t charge the headphone in your car or use the fast charger, otherwise, the headphone may be broken</span> because of the unstable voltage or excessive current voltage Please <span class="a-text-bold">notice that the charging voltage must not exceed 5.5V</span> and <span class="a-text-bold">the charging current must not exceed 3A.</span>