1. All bluetooth receive codec+Lossless bluetooth transmit
2. Recording+Bluetooth phone call
3. Gesture operation
4. Step counter
5. Custom screen orientation
6. USB Audio
7. USB DAC
8. Multi-style lock screen clock display
9. Use with watchband
10. Supports PO/LO/Spidf output
User interface
Customized
Chips used
Soc：Ingenic X1000E ； DAC：AK4377 ； Bluetooth chip：CSR8675
Connectivity
Bluetooth
4.2
Bluetooth transmit
SBC/aptX/LDAC
USB
TYPE C Two-way USB2.0
Bluetooth receive
SBC/AAC/aptX/aptX HD/LDAC
Display screen
Display size
1.54
Number of colours
262K
Display type
IPS TFT
Viewable angle
Full-view
Resolution
240×240
Pixel density(PPI)
220.4
Touchscreen
Single-touch
Storage
RAM
64MB
Storage card
Micro SD
Maximum storage expansion
Theoretically 2TB (only one micro SD card slot)
Buttons and ports
Buttons
Physical button+Touch screen
Headphone out (PO)
3.5 mm headphone jack
Line out (LO)
3.5 mm port（shared PO）
SPDIF output
3.5 mm port（shared PO）
USB
Two-way TYPE C USB2.0（Charging/Data transmisson/USB DAC/USB Audio）
General
Color
Black, Red, Blue, Silver, Titanium
Dimensions
45.3*42*13.7mm
Weight
38g
Volume control
60 steps +/- button control
Recommended headphone impedance
16~100Ω
Equalizer
5-band EQ (±6dB), 7 presets+custom preset
Balance control
±5dB
PO
Up to 384kHz-32bit/DSD128
Spdif
Up to 176.4kHz-24bit/DSD64
USB DAC
Up to 384kHz-32bit/DSD128
USB Audio
Up to 384kHz-32bit/DSD128
Power specifications
Battery
3.7V Li-polymer battery
Battery capacity
550mAh
Charging indication
Status bar indication,
Shutdown charging indication
Charging time
＜2.5h
Battery indication
Status Bar Battery indicator
Deep sleep time
22 days
Battery Life & Test Conditions
3.5mm headphone output：＞10.5h
Volume
24
Load
M3 open earbuds (27 Ω)
Screen
OFF
Test File
MP3 44.1kHz/16bit
Bluetooth transmit：＞12h（SBC）
Volume
24
Load
BTR1
Screen
OFF
Test File
MP3 44.1kHz/16bit
Bluetooth receiving：13.5h（SBC）
Volume
50
Load
M3 open earbuds (27 Ω)
Screen
OFF
Test File
MP3 44.1kHz/16bit
Others
Firmware Upgrade
Supports via zip file
Clock
Yes
Recording
Yes
Step counter
Yes
Headphone out specifications 1（3.5mm port）
Output power 1
≥42mW（16Ω / THD+N＜1%）
Output impedance
＜0.5Ω
Output power 2
≥24mW（32Ω / THD+N＜1%）
THD+N
＜0.003%（1kHz/32Ω）
Output power 3
≥2.7mW（300Ω / THD+N＜1%）
Separation
74dB
Frequency response
5～90KHz（-3dB）
SNR
≥118dB
Noise floor
＜2.5μV
File format support
Lossless:
DSD：DSD64，128（“.iso”“.dsf”,“.dff”）
APE(Fast): 384 kHz/24 bit
APE(Normal): 96 kHz/24 bit
APE (High): 96kHz/24 bit
APE (Extra High): not supported
APE (Insane): not supported
FLAC: 384kHz/24 bit
WAV: 384 kHz/32 bit
Aiff：192 kHz/32bit
Aif:192 kHz/24 bit
WMA Lossless: 96 kHz/24 bit
Apple Lossless: 192 kHz/24 bit
