General Specifications
Name/Model BTR11 Hardware Solution Bluetooth：BES2700IHC，AMP：HT97220
Color Black/White Volume Control Physical buttons
Weight About 13g Dimensions Approximately 55x19x14.6mm (including clip)
Status Indicator LED indicator shows Bluetooth transmission codec, charging status, low battery reminder, etc. Microphone Supports Bluetooth voice calls, built-in omnidirectional microphone
Bluetooth Reception (5.3) SBC/AAC/LDAC Supported Impedance PO：8~100Ω
Bluetooth Codec Indicator SBC：Blue light flashes once every 5 seconds FIIO Control Supported
AAC：Blue light flashes twice every 5 seconds Firmware Upgrade Bluetooth firmware can be upgraded via OTA
LDAC：Blue light flashes three times every 5 seconds 　 　
Buttons and Interfaces
Buttons Volume +/- buttons *1, multifunction button *1 USB Type-C(charging)
Headphone Output Standard 3.5mm jack 　 　
Power Parameters
Power Supply DC 5V/1A Battery Capacity 120mAh lithium polymer battery
Charging Time ＜1.5 hours 　 　
Battery Life and Testing Conditions
3.5mm Headphone Output: ≥15 hours
Audio Input Bluetooth reception Codec AAC/SBC
Volume 40mV output Gain N/A
Display Status N/A Playback Track and Format MP3 44.1KHz/16bit
EQ Off Load 32Ω
3.5mm Headphone Output: ≥8.5 hours
Audio Input Bluetooth reception Codec LDAC
Volume 40mV output Gain NA
Display Status N/A Playback Track and Format MP3 44.1KHz/16bit
EQ Off Load 32Ω
Audio Parameters
Headphone Output Performance (3.5mm, Bluetooth decoding, LDAC)
Output Power L+R≥45mW+45mW(16Ω，THD+N＜1%） Output Impedance ≤0.5Ω
L+R≥30mW+30mW(32Ω，THD+N＜1%） Channel Separation ≥76dB
L+R≥3mW+3mW(300Ω，THD+N＜1%） Signal-to-Noise Ratio ≥101dB(A-weighted)
THD+N  ＜0.008%(1kHz/-3dB@32Ω) Noise floor ≤8uV(A-weighted)
Frequency Response 20Hz~20kHz：damping＜0.5dB 　 　
20Hz~45kHz：damping＜2.3dB

Test conditions: Bluetooth decoding, LDAC codec, -5dB sinusoidal signal, 20Hz-20kHz, 3.5mm headphone output (32Ω load).

Test conditions: Bluetooth decoding, LDAC codec, -5dB sinusoidal signal, 20Hz-45kHz, 3.5mm headphone output (32Ω load).

Test conditions: Bluetooth decoding, LDAC codec, -3dB sinusoidal signal, 20Hz-20kHz (32Ω load).