HiFo® HeartBeat Sports100 Wireless Headphones are designed with active sportsmanship in mind by integrating the bio-metric technology into Bluetooth music playing to provide you with various health gauging information and functions which make your workout more effective and enjoyable, including heart rate monitoring, pedometer, map and GPS trail tracking. In addition, the ergonomically designed flexible and lightweight Ear-hooks make sure these earphones stay snugly in and around your ears comfortably for extended use, and the IP54 sweat-proof capability let you be assured to enjoy your intense activities. Meanwhile, HiFo® HeartBeat Sports100 Wireless Headphones keep the standard high for music performance and sound quality. The CSR Bluetooth Chip, CVC6.0 Intelligent Noise Cancellation and 5-Band Equalizer Deliver Highest Sound Quality to Bluetooth enabled devices compatible with both Android and iOS systems. Here are some key parameters for your reference: Bluetooth V4.1 & V3.0 Double model; effective working range ~30ft; call/play ~6H; charging time ~1.5H; Mic sensitivity -41±1dB; frequency range:20-20KHZ; sensitivity(SPL) 93dB; impedance 19Ω; rated input power 10mW; battery capacity 100mA.
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