Shokz TurboPitchT technology with 2 added bass enhancers offers better sound than previous models Open-Ear design helps you stay aware of your surroundings Titanium frame provides a secure fit A 20% smaller size than previous models plus balanced weight distribution improve the fit and comfort Rechargeable battery offers up to 10 hrs. of music and calls; quick charge feature Dual noise-canceling microphones IP55 rating means these headphones are moderately water-resistant; they can withstand low-pressure water streams from any angle Compatible with the Shokz app