Model BTR7 BTR5 2021 BTR5 BTR3 BTR1
Volume Adjustment 60 Steps / Independent adjustment 60 Steps / Independent adjustment 60 Steps / Independent adjustment 32 Steps / Independent adjustment Independent adjustment for some phones but simultaneously for iPhone and some other phones

MQA Renderer

/ / /

Bluetooth Profile

SBC,AAC,aptX, aptX Low Latency,aptX HD, aptX Adaptive,LDAC SBC, AAC, aptX, aptX LL, aptX HD, LDAC SBC, AAC, aptX, aptX LL, aptX HD, LDAC SBC, AAC, aptX, aptX LL, aptX HD, LDAC and LHDC SBC, AAC, aptX and aptX LL

Supported Audio Formats

A2DP,AVRCP,HFP,HSP

A2DP,AVRCP,HFP,HSP

HFP, HSP, A2DP and AVRCP HFP, HSP, A2DP and AVRCP HFP, HSP, A2DP and AVRCP
Bluetooth Version 5.1 5.0 5.0 4.2 4.2
Bluetooth Chip QCC5124 CSR8675 CSR8675 CSR8675 CSRA64215
DAC Chip

ES9219C×2

THX AAA 28 x2

ES9219C×2

ES9218P×2 AK4376A AK4376A
Amp Chip
USB DAC Chip XMOS XUF208 Xmos XUF208 Xmos XUF208 CSR8675自带 /
USB DAC Format 384KHz 32bit/ DSD256  384k/32bit
DSD 256
384k/32bit
DSD 256
48K/16bit /
Dedicated Pairing Button /
Dedicated Volume Button
Transmission Distance (at open area) About 10m About 10m About 10m About 10m About 10m
Status Indicator & Displayer 1.3-inch IPS display 0.49' 64×32 OLED
Battery, Format, Volume
Menu setting
0.49' 64×32 OLED
Battery, Format, Volume
Menu setting
RGB light indicates the input Bluetooth audio codec, charging and working status LED light indicates sound effect, charging and working status
Line Control CTIA Microphone/Vol/Track CTIA Microphone/Vol/Track CTIA Microphone/Vol/Track /  
APP Controller
Hands-free Call / Mic
Call up Siri in iOS /
NFC / /
3.5mm Headphone Output 160mW 80mW 80mW 25mW 25mW
2.5mm Balanced Output / 240mW 240mW /  /
4.4mm Balanced Output 320mW / / / /
SNR(A Weight) 117dB 122dB 122dB 120dB  
USB Port Type C Type C Type C Type C Micro USB
Battery Capacity 880mAh 550mAh 550mAh 300mAh 205mAh
Battery Life(AAC mode) about 9h About 9h About 9h About 11h About 8h
Charging Time

Wired charging time: ≤1.5 hours 

Wireless charging time: ≤3 hours

1.5h 1.5h 1.5h 2h
Dimensions About 39.6x83.6x14.6mm 72*32*11.1mm (excl. back clip) 72*32*11.1mm (excl. back clip) 58*25*10.4mm (excl. back clip) 24*50*11.6mm (excl. back clip)
Wearing Leatherette case Back clip + Lanyard Back clip + Lanyard Back clip + Lanyard Back clip + Lanyard
Weight About 68g 43.7g 43.7g 25g 20.5g