Innovation: the M1E sports hi-fi bluetooth earphones’ design is based on the human ergonomics. The professional ear hook guarantees comfort for any ear. The unique earplug design will be comfortable and won’t slip out during sports. Functionality: the earphones’ design is based on ergonomics. The unique earplug design allows sound to slip into the ear and provides an excellent bass experience. Environmentally friendly: the design team follows the concept and target of 100% recyclability. The high-quality materials used in the M1E are reliable, long-lasting and recyclable. Waterproof: waterproof for any kind of water sports.