Up to 16 HOURS MUSIC ENJOYMENT : Built-in improved polymer lithium battery, Flame wireless headphones offers up to 16 hours of superior audio performance / talk time after only 2 hours' charge enough power to fuel your intense workout with music for all day. And it will show the remaining battery power of the headphones on your Phone screen. (Note: Please use the charging cable provided on the package) | IMMERSIVE SOUND WITH POWERFUL BASS: With 11mm dynamic drivers，built-in cVc6.0 noise canceling microphones and chip of SBC & AAC audio, Flame wireless sports headphones provides the fantastic sound quality with powerful bass sound and crystal-clear voice calls at any volume. Choose the suitable eartips(XS/S/M/L) to get a better sealing and listening experience for intensified workouts. | COMFORT AND SECURE FIT : With Lightweight and ergonomic design, Flame wireless sport earphones is a great combination of comfort and stability with ear-hook and in-ear fitting designed for strenuous workouts for outdoor or home. | FAST AND STABLE BLUETOOTH V5.0 CONNECTION : Flame bluetooth earbuds adopts the Bluetooth V5.0 technology for more stable connection and stronger signal transmission. It supports various devices and you can stay connected to 2 devices at the same time. Compatible almost Bluetooth devices like PC,phones etc. | IPX7 SWEATPROOF & BORN for SPORTS: with IPX7 waterproof shell and interior Nano-coating, Flame running earbuds can fend off sweat and heavy rain and it is suited for strenuous workouts and all weather conditions. Sweatproof earbuds perfect for workout,running, jogging, hiking, yoga, exercises, gym, fitness, traveling ,climbing,cycling and etc.