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- Main Chip: RF03
- Bluetooth: 5.0
- Sensor chip: STK8321
- Battery Capacity: 15mAh
- Battery life: 5-7 days of use and 15 days of standby
- Charging time: About 1H
- Waterproof: 5ATM
- Size 8: Dia 18.3mm; Circumference 57.5mm
C$31.87 C$38.89
- Main Chip: RF03
- Bluetooth: 5.0
- Sensor chip: STK8321
- Battery Capacity: 15mAh
- Battery life: 5-7 days of use and 15 days of standby
- Charging time: About 1H
- Waterproof: 5ATM
- Size 7: Dia 17.5mm; Circumference 55mm
C$31.87 C$39.52
- Main Chip: RF03
- Bluetooth: 5.0
- Sensor chip: STK8321
- Battery Capacity: 15mAh
- Battery life: 5-7 days of use and 15 days of standby
- Charging time: About 1H
- Waterproof: 5ATM
- Size 7: Dia 17.5mm; Circumference 55mm
C$31.87 C$36.98
- Main Chip: RF03
- Bluetooth: 5.0
- Sensor chip: STK8321
- Battery Capacity: 15mAh
- Battery life: 5-7 days of use and 15 days of standby
- Charging time: About 1H
- Waterproof: 5ATM
- Size 12: Dia 21.6mm; Circumference 67.8mm
C$31.87 C$36.65
- Main Chip: RF03
- Bluetooth: 5.0
- Sensor chip: STK8321
- Battery Capacity: 15mAh
- Battery life: 5-7 days of use and 15 days of standby
- Charging time: About 1H
- Waterproof: 5ATM
- Size 12: Dia 21.6mm; Circumference 67.8mm
C$31.87 C$37.29
- Main Chip: AC6323
- Bluetooth: 5.0
- Sensor chip: SC7A20H
- Battery Capacity: 20mAh
- Battery life: 3-5 days of use and 7-10 days of standby
- Charging time: About 1-2H
- Waterproof: IP68
- Size 13: Dia 22.2mm; Circumference 69.7mm
C$25.10 C$30.37
- Main Chip: AC6323
- Bluetooth: 5.0
- Sensor chip: SC7A20H
- Battery Capacity: 20mAh
- Battery life: 3-5 days of use and 7-10 days of standby
- Charging time: About 1-2H
- Waterproof: IP68
- Size 13: Dia 22.2mm; Circumference 69.7mm
C$25.10 C$29.37
- Main Chip: AC6323
- Bluetooth: 5.0
- Sensor chip: SC7A20H
- Battery Capacity: 20mAh
- Battery life: 3-5 days of use and 7-10 days of standby
- Charging time: About 1-2H
- Waterproof: IP68
- Size 12: Dia 21.4mm; Circumference 67.2mm
C$25.10 C$30.37
- Main Chip: AC6323
- Bluetooth: 5.0
- Sensor chip: SC7A20H
- Battery Capacity: 20mAh
- Battery life: 3-5 days of use and 7-10 days of standby
- Charging time: About 1-2H
- Waterproof: IP68
- Size 10: Dia 19.8mm; Circumference 62.1mm
C$25.10 C$30.87
- Main Chip: AC6323
- Bluetooth: 5.0
- Sensor chip: SC7A20H
- Battery Capacity: 20mAh
- Battery life: 3-5 days of use and 7-10 days of standby
- Charging time: About 1-2H
- Waterproof: IP68
- Size 9: Dia 18.9mm; Circumference 59.5mm
C$25.10 C$30.87
- Main Chip: AC6323
- Bluetooth: 5.0
- Sensor chip: SC7A20H
- Battery Capacity: 20mAh
- Battery life: 3-5 days of use and 7-10 days of standby
- Charging time: About 1-2H
- Waterproof: IP68
- Size 9: Dia 18.9mm; Circumference 59.5mm
C$25.10 C$30.87
- Main Chip: AC6323
- Bluetooth: 5.0
- Sensor chip: SC7A20H
- Battery Capacity: 20mAh
- Battery life: 3-5 days of use and 7-10 days of standby
- Charging time: About 1-2H
- Waterproof: IP68
- Size 8: Dia 18.1mm; Circumference 56.9mm
C$25.10 C$30.12