HOD HEALTH AND HOME Australia has been operating online and instore for 8 years. All products come with a 1 year warranty, fast shipping and special offers added to our site daily.. Kst-900 Is A High-Performance And Multifunctional Headset. It Can Be Used Both Wired (Via The 3.5Mm ) And Wireless (Via Bt). With The High-Quality Microphone The Headset Supports Hands-Free Calls. The Special Speakers Transmit Powerful Bass And Perfect Sound To Your Ears. Kst-900 Over-Ear Styling Headset Is Stable Lightweight And Comfortable. Features: [Wireless Connection] Easy To Pair With Almost All Bt-Enabled Audio Devices To Enjoy Wireless Stereo Music. [3.5Mm Wired Connection] With 3.5Mm Audio Jack It Can Connect To A Variety Of Music Players (Such As Mp3 / Mp4 Etc) Without Bt Function. [Hands-Free Calling] High-Sensitive Microphone Reduce Ambient Noise And Grasp The Detail Of Voice Offering High Quality Hands-Free Phone Conversation. [Long Duration Time] Built-In Rechargeable 180Mah Lithium Battery Lasts More Than 6 Hours Of Playing Time And More Than 180 Hours Of Standby Time Per Charge Cycle. [Ergonomic Design] Headband Length Super Soft Rotating Earmuff Comfortable To Wear And Easy For Storage. Note: When Using The Headset As A Wire Headset The Microphone Can't Work And Headphone Keys Are Useless. Specifications: Model Number: Kst-900 Type: Over-Ear Stereo Bt Headphone With Mic Bt Version: 3.0+Edr Transmission Distance: Up To 10M Frequency Response: 20Hz-20Khz Resistance: 32Ohm Diameter: 40Mm Sensitivity: 100Db5Db Rechargeable Li-Polymer Battery: 180Mah Playing Time: 6 Hours (Depends O