Latest & Stable Bluetooth 5.3: Tangent Flex Wireless Headphone adopts Bluetooth 5.3 technology, which delivers immersive audio for a more stable connection and stronger signal transmission. These Bluetooth earphones support wider compatibility with smartphones, tablets, laptops, MP3, etc. All-day Playtime: 150mAh Low power consumption rechargeable battery provides up to 38 hours of continuous music time with a single charge. Loud & Clear Stereo Sound with Deep Bass: 13mm dynamic drivers ensure Bluetooth wireless headphones' amazing sound quality for extraordinary clarity and detail. Passive noise cancellation design allows you to surf music or make phone calls without any disturbance. Ideal Indoor/Outdoor Design: Provides additional flexibility, portability, and durability when moving. You never have to worry about your headphones falling off and losing. Suitable for fitness, exercise, and running. The lightweight magnetic locking buds will hang around your neck in style and comfort. IPX5 Waterproof: Featured with IPX5 waterproof levels, our wireless headphones neckband Bluetooth serves you anytime no matter whether you are in the gym, working out, running, and other sweaty exercises （not supporting swimming or shower or heavy rain. Other product specifications: 32 ohms speaker impedance, 20Hz-20kHz speaker frequency response, Type-C charging port, DC5V 1A charging input, 1 hour charge time, 6 months manufacturer warranty from the date of purchase on manufacturing defects only & customer care contact details support@ptron.in/040-67138888.