3 Metres underwater waterproof, IPX8 levelIn-ear wireless design, very suitable for swimming, surfing, snorkeling, running, fitness and hot spring no more than 60 - C, when the headphones sink the depth of 3-5 metres, the water still will not enters the inside of headphones. (PLEASE REMOVE THE EARPLUGS AND DRAIN THE WATER INSIDE WHEN THE VOLUME OF HEADPHONES LEFT AND RIGHT CHANNELS IS INCONSISTENT.)One-key switch MP3 to Bluetooth mode8GB memory, it can be store about 1000 songs (THERE ARE SOME TESTING SONGS IN THE HEADPHONES), only support MP3, APE, FLAC, WMA and WAV 5 formats, play time 4 hours, call duration 2 hrs, Bluetooth 5.0 version, connecting quickly. (WARNING: THE BLUETOOTH SIGNAL CAN NOT SPREAD UNDERWATER, PLEASE SWITCH TO MP3 MODE WHEN SWIMMING.)Shuffle, order playing & managing playlistsStore music likes the "U" disk, managing different style musics and song lists by create multiple folders, order playback is perfect for playing pre loaded E-books. (PLEASE CHARGE FULLY WHEN USING THE HEADPHONES IN FIRST TIME AND MAKE SURE TO INSERT THE HEADPHONES INTO BOTTOM OF THE CHARGER.)Light & portableThe headphones weight only 39 gram for different head sizes, including male, female and children 10 old above, wearing stable. (PLEASE ENSURE THE HEADPHONES CHARGING JACK DRY AND CLEAN BEFORE CHARGING OR CONNECT WITH THE COMPUTER.)What's in the boxMashine swimming headphones, waterproof earbuds, charging cable and multi-language user guide. (ENGLISH, DEUTSCH, FRAN\u00c7AIS, ESPA\u00d1OL and ITALIANO.)Warning:1. Please charge fully when use the headphones in first time and make sure to insert the headphones into most bottom of the charger.2. The Bluetooth signal can not be spread underwater, please switch to MP3 mode when swimming.3. Please remove the earplugs and drain the water inside when the headphones left and right channels is inconsistent. And use your earplugs that are suitable for you, these earplugs can be mixed.4. Please rinse the headphones with clean water after swimming or fitness and keep the headphones is dry.5. There are some testing musics in the headphones, the sound quality is better than the bone conduction headphones.Mashine swimming headphones is perfecting for pool, surfing, snorkeling, shower, running and fitness, it can be sinks to underwater 9 feet.Key function:Mashine swimming headphones built-in Bluetooth & MP3 2 in 1, supports shuffle, order playing and folder create function.Long press the power key for 2 seconds to turn on, the headphones automatic enters to MP3 mode, short press for play or pause, short press 2 times to switch to Bluetooth mode, short press for answer when call is coming, long press for hang up. Long press 6 seconds to turn off.Short press "+" for increase volume or "-" for decrease volume, long press "+" for next song or "-" for previous song.Specification:Waterproof rating: IPX8 (swimming, surfing, snorkeling, shower)Bluetooth version: 5.0 (transmission radius: 32 feet)Memory: 8 GBBattery: 160 mAMaximum playback time: 4 hours (varies according to the playback volume)Call duration: 2 hoursCharging time: 2 hoursOperating temperature: 0\u2103-60\u2103Support format: MP3, APE, FLAC, WMA and WAV (APE, FLAC and WAV three lossless formats only supports song with 24 bits 48K sampling rate, does not supports higher than 24 bits 48K sampling rate.)Item weight: 1.4 ouncePackage size: 6.3 x 4.3 x 1.6 inchInsert the headphones into most bottom of charger.WHAT IS IN THE BOX?Mashine swimming headphone (3 metres underwater waterproof)Charging cableSwimming earplugsMulti-language user guide (ENGLISH, DEUTSCH, FRAN\u00c7AIS, ESPA\u00d1OL and ITALIANO)Suitable liquid: clean water, tap water, sweat, pool water, sea water and hot spring no more than 60\u2103.Unsuitable liquid: liquids other than those mentioned above, e.g. shower gel, soap water and shampoo, etc.3 METRES UNDERWATER WATERPROOFThe pool special headphones! After the headphones are sinking underwater 3-5 metres depth, the water still will not enter the headphones inside.ONE-KEY SWITCH MP3 TO BLUETOOTHJust press the power key once to switch from MP3 playing to Bluetooth mode when you want to listen to music in the phone.SWIMMING EARPLUGSMashine swimming earplugs with waterproof and breathable design, please choose swimming earplugs before swimming. Your ears maybe need different sizes, these earplugs can be mixed.Mashine swimming headphones is supporting shuffle and order playing.Creating yourself favorite playlists or music folders, easy to manage music with different style.4 hours play time (varies according to the playback volume). Fully enjoy the fun of swimming and music.Mashine swimming headphones weight only 39g, there is no any pressur on the ears when wearing.

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