The btr11 is the first in its price range to support ldac codec, truly bringing high quality bluetooth audio to affordable prices. It is equipped with the new bes2700 bluetooth chip with support for bluetooth 5.3, a dual core process for smooth performance, and a dual core npu for enhanced sound processing. High performance independent headphone amp inside the btr11 is a high performance independent headphone amplifier with ultra low resistance and capable of outputting up to 45mw 16omega, enough to drive many earphones well. Enjoy high quality sound comparable to that of a wired connection! Low impedance headphone driving power 30mw 32omega, 45mw 16omega bluetooth codec indicator the red and blue dual colour light intuitively and cleverly indicates the device's status through colour combinations, whether powering on or off, pairing, charging, low on power or bluetooth codec information. Built in microphone ndash supports voice calls the built in high sensitivity omnidirectional microphone is paired with support for call noise reduction, for crisp and clear calls. Ultra low power consumption ndash 15 hours of battery life inside the btr11 is a rechargeable battery, with enough capacity to let you listen for up to 15 hours. When the battery level is low, recharge the btr11 back up to 90% in just one hour. Charging is conveniently done via a type c connector. Elegant, light and compact design btr11 features a sleek polished finish, crafted from transparent material with multiple silk screen prints. With a luxurious feel and a stylish black or white design. The btr11 weighs only 12.5g and is about 5.5cm long ndash approximately the length of a finger. You can choose to wear the btr11 either using the back clip or hanging it on a lanyard, making it easy to carry around with you wherever you go. Supports pairing to 2 devices simultaneously the btr11 remembers being connected to 2 different bluetooth devices, eliminating the need to always re pair for more convenience. Note when the btr11 is turned off and then on again, the second device needs to be manually connected. One touch reconnect ndash seamless listening if your bluetooth headphones get disconnected, simply press the multi function button to reconnect, letting you listen to music and answer calls without skipping a beat.