OPENMOVESPECS Model Number: S661 Frequency response: 20Hz 20kHz Bone conduction technology: 7th generation of Bone Conduction Technology Sweat Water resistance: IP55 Chip: QCC3024 Weight: 29g Bluetooth version: Bluetooth v5. 0 Battery: Rechargeable Li Polymer battery Compatible profiles: HSP, HFP, A2DP, AVRCP Battery capacity: 135 mAh Frequency band: 2402 2480MHz Continuous play: Up to 6 hours Maximum RF output power: 4dBm Standby time: Up to 10 days Wireless

Continuous play

Sensitivity:

Speaker impedance: 8

Max charge voltage

Speaker impedance:

33 feet (10m) Maximum RF output power 0 decibel Frequency band:

Model Number: S661 Frequency response: 20Hz - 20kHz

20Hz~20KHz

Up to 8 hours

Weight: 29g

Part Number: AS810 Battery:

96 ± 3dB Charge type: USB-C  Microphone sensitivity -40 ± 2dB Warranty: 2 years