Specifications:Optional Color: Black， WhiteWearing Type: In-ear Product Weight (g): 16.3gDimensions (inch/mm): 0.6x0.7x0.8inch/16.98x18.95x21.6mmBluetooth Version: V4.1Bluetooth Protocol: HFP/A2DP/HSP/AVRCP/APTXBluetooth Chip: CSR8645Transmission Range: 1