The MW08 and MW08 Sport are both in-ear earphone models from Master & Dynamic. The main differences are: MW08 uses ceramic housing; MW08 Sport uses TR90 composite housing for lightweight comfort MW08 has leather and stainless steel details; MW08 Sport uses silicone tips and fins for stability MW08 has 10 hour battery life; MW08 Sport extends this to 12 hours MW08 has wireless charging; MW08 Sport does not MW08 Sport has enhanced sweat resistance and fit for athletic activity MW08 retails for $299; MW08 Sport costs $249