Bracelet size（mm）：56.3*51*12.5mm Weight: 196g Compatible System: Android 5.0 and above; IOS10.0 and above FLASH memory: 256MB Screen size：1.43…

Screen size: 2.02 inch curve screenTouch type : Full touch screenType: Lithium polymer batteryCapacity: 3.7V/240mAhCharging Method: Wireless…

Compatible System ： Android 5.0 and above; IOS10.0 and aboveResolution : 320*385Type : Lithium polymer batteryCharging Method : Wireless…

Model: K56 Chip: JL6976D4 Bluetooth version: V 5.2 Transmission distance: 10m Charging voltage: DC5V Charging time: 20minutes Talk time: 20…

Model: K56 Chip: JL6976D4 Bluetooth version: V 5.2 Transmission distance: 10m Charging voltage: DC5V Charging time: 20minutes Talk time: 20…

Model: K56 Chip: JL6976D4 Bluetooth version: V 5.2 Transmission distance: 10m Charging voltage: DC5V Charging time: 20minutes Talk time: 20…

Bluetooth version: 5.3 Battery capacity: 420mah Talk time: 26 hours Maximum volume music time: 32 hours Medium volume music: 52 hours Charging time:…

Bluetooth version: 5.3 Battery capacity: 250mah Talk time: 16hours Maximum volume music time: 18 hours Medium volume music: 31hours Charging time:…

Frequency: 20-20kHz10m Working distance: 10m Sensitivity: -49dBt3dB Directivity：Omnidirectional Battery: 3.7v 250mA bulit in Charging voltage：DC…