Advanced sound technology delivers rich, full-spectrum stereo music from the powerful 14mm speakers.

With dual-mic  AudioIQ2 noise canceling technology you no longer have to yell to be heard or strain to hear calls while you're on the move.

Automatically adapting to your environment, AudioIQ technology separates your voice from the noise so callers hear you - not your surroundings - while enhancing incoming call quality.

With binaural telephony, you hear your calls in both ears so you can focus on your conversations.

It's easy to monitor the remaining battery life of your BackBeat 903+ by looking on your iPhone screen for the battery icon.

Voice alerts from your headphones also announce:

• Remaining listening time
• incoming call
• Low battery
• Mute on or off
• Track fwd or back
• Bluetooth connection status

Telescoping and swiveling adjustments provide a personalized fit for the best sound and a secure, comfortable fit.

Wear all day through all levels of activity - the ergonomic weighting and design doesn't pull or pinch.

The durable, flexible cable makes it easy to quickly tuck the headphones away into the storage case or your pocket.

When you want a little more bass to your tunes, simply press the music control button for 2 seconds during music play to activate the Bass Boost feature.

With a quick tap of the multi-function music control button you can activate the microphones and suppress your music to hear your environment or someone nearby.

If your device supports the Bluetooth AVRCP profile, you can use the headphones to control volume up/down and track fwd/back for your music.