Havit H655BT Bluetooth Headphones (Blue). Product Features:. Package Contents : Headphones x 1, 3.5mm Audio Cable x 1, USB Type-C Charging Cable x 1, User Manual x 1, Quality Certificate x 1; Headphone Sensitivity: 102 dB; Noise-Cancelling Microphone: Yes; Market Segment: Consumer; Charging Time: 1.5 h; Game Mode: Yes; Color: Blue; Connectivity Method: Wired and Wireless; 3.5mm Connector: Yes; Supported Battery Type: Built-in; Impedance: 32; Wireless Router Range: 10 m; Frequency Response (Music Mode): 20 - 20000 Hz; Application: Calls/Music; Noise Cancellation Type: Active; Warning: Avoid contact with water., Do not use while charging., Keep away from heat sources.; Speaker Diameter: 4 cm; Bluetooth: Yes; Music playback time: 76 h; Battery capacity: 700 mAh; Wearing style: Headset; Microphone type: Built-in microphone; Product type: Headphones; Noise reduction: Yes; Bluetooth version: 5.3; Bluetooth profiles: AVCTP; USB connector: USB Type-C;.