The iFit SmartBeat Forearm Heart Rate Monitor is a unisex device that measures heart rate and comes with a rechargeable LED button. It is made of nylon, aluminum, plastic, and acrylic and is suitable for indoor and outdoor use. The device is compatible with iOS and Android operating systems and has wireless Bluetooth connectivity. The armband can be worn on the forearm or bicep and has an average battery life of 30 hours. It is ideal for gym and training, weight lifting, yoga, and running and jogging.