Sony MDR-AS400EX In-Ear Earphone - Black

As hard-working as you for your active lifestyle, the MDR-AS400EX headphones are sweat-proof and feature an adjustable vertical ear loop for precise and comfortable fitting during wear.

They won’t fall off during a tough workout
When you’re working up a real sweat you need headphones that stay secure: clip the loop hangers to your ears and really get moving

Get the perfect fit for your exercise
Adjust the loop hangers for the best possible fit. You also get four sizes of soft silicone earbuds (SS, S, M and L) for maximum comfort

Power through with a 9mm driver
When you’re feeling the strain in those final workout minutes, pure, energised sound keeps you going until the very end

Every uplifting chorus is crystal clear
With 103dB/mW sensitivity and a frequency range of 5-24,000Hz, turn up the volume and hear pure detail

Hear resonant acoustics with a closed design
Tightly sealed earcups reflect your music back towards your ears for resounding audio

Ready for rain, sweat or spray
When the rain beats down, splashproof headphones will keep on playing throughout your training

Get flexible with a 1.2m cord
Free up your movement with a cord that’s long enough for the treadmill or the streets

Work hard, look good
A stylish design comes in a choice of either black or white

Easily slip the headphones in your pocket
A stylish carrying pouch keeps your headphones safe, secure and ready