Key Features: Pocket friendly just 7.95mm at its thickest point LDAC & apt-X HD Qualcomm QCC5125 bluetooth chip MagSafe compatible attach to iPhone 12 or newer ESS ES9281AC Pro DAC for desktop-class audio Analog 3.5mm headphone output 32 to 300 ohms Decodes lossless audio DSD MQA Apple Lossless 8 hours of continuous music with 1160mAh battery Dual microphones for bluetooth calling Designed to match with iPhone's aesthetic Box Contents: Tea (Ultraslim Headphone Amplifier for Smartphones) USB-C to C cable (10cm Data + Power) USB-C to Lightning cable (10cm Data Only) Instruction Manual Warranty Card