Perfect for fast movement and high-impact workouts, the Sony MDR-AS40EX active style earphones can be used with or without the detachable soft hangers and the moisture guard allows for moisture to pass around headphones. The MDR-AS40EX comes for $39.99 with three pairs of earbuds (S, M, L) to ensure the most comfortable fit and a hard carrying case.

Specifications:
► Frequency response: 10Hz ~ 23kHz
► Nominal impedance: 16Ω
► Sensitivity: 100dB/mW
► Power handling: 100mW