LAZER HELMET HEART RATE MONITOR compatible with the following Lazer models: (Blade+, Blade+ MIPS, Bullet 2.0, Z1/Z1 MIPS) The Lazer LifeBEAM and Cooperation is the first time wearable technology has been used in cycling helmets. The LifeBEAM app is the only device that can be placed in a cycling helmet to continuously measure the rider's heart rate, No chest strap needed. This technology detects your body as you run and gives you an accurate analysis of your performance, while protecting your head. It was initially developed by LifeBEAM to monitor the vital signs of pilots and astronauts, But now you can have the same technology on your weekly rides. Instant heart speed feedback without chest strap Necessary works with Bluetooth and ANT+.