Top features: - Get the most from your music with powerful wireless sound - Listen safely with moderate sound isolation - A sporty and slim sweat-proof design you can wear with helmets or goggles - Headphones that don't fall out of your ears during sport - Listen for longer with over six hours of battery power Powerful wireless sound Monster iSport Intensity Wireless Bluetooth Headphones give you freedom of movement. With Bluetooth technology you can listen without wires within a 30 metre range of your smartphone or Bluetooth compatible device, leaving your hands and body free to be active while you listen to clear, powerful sound. Listen safely With moderate sound isolation you can listen to your music safely and still be aware of your surroundings. Moderate sound isolation lets in only 40% of background noise in - so you can safely hear when a car is approaching while you're out for a run and stay safer at night. Wear with anything The iSport Intensity has a slim profile that makes them a suitable choice for wearing with sporty headgear. Wear them with a helmets, beanies or goggles and continue listening in comfort even during strenuous exercise thanks to a sweat-proof design.The headphones weigh just 18 grams, so you'll barely notice you're wearing them. Headphones that won't fall out Monster's SportClip system keeps the headphones firmly in place during the most active exercises. Unlike other non-sports headphones they won't fall out of your ears when you're running, jumping or lifting weights in the gym.Three sizes of ear clips help provide the best possible fit, and a tangle-resistant cable means they won't get in a mess while in your gym bag. Six hours of battery power With six hours of battery life you can train throughout the day safe in the knowledge that your battery will last no matter how many motivational playlists you listen to.