Take open-ear listening to new depths with Xtrainerz wireless MP3 headphones. Xtrainerz are an innovative solution for consuming audio in and out of the water while you’re cross-training toward your new PR. The open-ear design removes the limitations of traditional swimming headphones, and the 4GB memory stores up to 1,200 songs, allowing you to take Xtrainerz on any adventure; no wires, no devices, no limits. (Not Bluetooth compatible)

• Bone conduction technology delivers music through your cheekbones, ensuring ears remain completely open to hear ambient sounds.
• 4GB of built-in storage to hold up to 1,200 songs with full track and volume control at the touch of a button.
• Supports MP3, WAV, WMA, AAC, and FLAC files (not Bluetooth compatible).
• Enjoy eight hours of premium audio stroke after stroke.
• Fully waterproof (IP68 rated) to withstand complete submersion in up to 2 meters of water.
• Simply connect to a computer via the USB cradle to drag and drop your favorite songs.
• OpenFit design ensures bud-free, pain-free listening.
• Complete wraparound titanium design provides a flexible fit for unnoticeable all-day comfort and stability in and out of the water.
• PremiumPitch 2.0+ delivers wide dynamic stereo sound and louder volume.
• Charge fully in two hours with the USB charging cradle.
• Audrey Says voice prompts guide users through power, play mode, and more.
• Hassle-free 2-year warranty included.
• Speaker type: bone conduction transducers
• Frequency response: 20Hz~20KHz
• Sensitivity: 98 ± 3dB
• Compatible profiles: MP3, WAV, WMA, AAC, FLAC
• Maximum charge voltage: 5.25 V
• Speed impedance: 8.50 ± 20%
• Battery: Lithium
• Continuous play: Up to 8 hours
• Battery capacity: 183 mAh
• Charge time: < 2 hours
• Weight: 1.06 oz (30g)