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Features:
All-new Qualcomm QCC 3005 bluetooth chip to support Bluetooth 5.0
Supports aptX / aptX LL / SBC / AAC codecs
High-performance AK4376A DAC brings improved performance
New Type-C connector with USB DAC functionality
Unique RGB light to indicate the input Bluetooth audio codecs and working status
Built-in microphone with Qualcomm cVc noise-cancellation technology
One-touch NFC pairing
Call up smart assistant, works with Siri
8 hours playback and 140 hours standby time

1

The Comparison Table for Bluetooth Amplifiers
Model BTR3 BTR1 BTR1K μBTR
Volume Adjustment Independent adjustment separating from phone's volume Independent adjustment for some phones but simultaneously for iPhone and some other phones Independent adjustment separating from phone's volume Independent adjustment separating from phone's volume
Supported Audio Formats SBC, AAC, aptX, aptX LL, aptX HD, LDAC and LHDC SBC, AAC, aptX and aptX LL SBC, AAC, aptX and aptX LL SBC, AAC and aptX
Bluetooth Profile HFP, HSP, A2DP and AVRCP HFP, HSP, A2DP and AVRCP HFP, HSP, A2DP and AVRCP HFP, HSP, A2DP and AVRCP
Bluetooth Chip CSR8675 CSRA64215 QCC3005 CSR8645
DAC Chip AK4376A AK4376A AK4376A /
Amp Chip TPA6132A2
USB DAC / /
Dedicated Pairing Button / /
Dedicated Volume Button
Transmission Distance (at open area) About 10m / LDAC (4m at SQ first) About 10m  About 10m  About 10m 
Status Indicator Light RGB light indicates the input Bluetooth audio codec, charging and working status LED light indicates sound effect, charging and working status SBC: Blue light flashing
AAC: Cyan light flashing
aptX/aptX LL: Purple light flashing
USB DAC: White light flashing
LED light indicates charging and working status
Hands-free Call / Mic
Call up Siri in iOS /
NFC /
Headphone Output 3.5mm stereo jack 3.5mm stereo jack 3.5mm stereo jack 3.5mm stereo jack
USB Port Type C Micro USB Type C Type C
Battery Capacity 300mAh 205mAh 205mAh 120mAh
Battery Life About 11h About 8h About 8h About 8-9h
Charging Time 1.5h 2h 1.5h 1h
Dimensions 58*25*10.4mm (excl. back clip) 24*50*11.6mm (excl. back clip) 24*50*11.6mm (excl. back clip) 55*19*9.1mm (excl. back clip)
Wearing Back clip + Lanyard Back clip + Lanyard Back clip + Lanyard Back clip 
Weight 25g 20.5g 20.5g 12.5g

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