Brand - Havit, Model - Havit i39, Type - Neckband, Connectivity - Bluetooth, Frequency Response - 20Hz-20kHz, Sensitivity - 92dB, Impedance (ohm) - 16ohm, Microphone - Yes, Working/Bluetooth Range - 10 Meter, Bluetooth Version - Bluetooth 4.2, Sound Mode - Stereo, Battery - 60mAh x 2, Rechargeable Battery - Yes, Charging Time - 2 Hours, Playing Time - Up to 8 Hours, Body Materials - Aluminum alloy+ Silicone, Weight (gm) - 15gm, Color - Black, Feature - IPX5 Anti-Sweat, Bluetooth Earbuds for Running are protected with waterproof silicone gel to keep sweat, dust and water away, Perfect for running, jogging, cycling and other outdoor activities, Faster and more efficient than ever before, lower power consumption, stable connection and music quality, Magnetic Adsorption Design, Comfortable In-ear Design, Hands-free Calling, Easy Operation Built-in noise free microphone allows to make and answer phone calls while exercising, Powerful & Enhanced Bass Stereo Sound, The 6mm metal speakers deliver loud and bass sound, reduce outside noise for better listening experience, Premium-Quality & Anti-Wear, Adopts durable ABS and PC material, being processed by polishing and plating, Others - Profiles Supported: HSP/HFP/A2DP/AVRCP, Impedance: 16ohm, Talk Time: 8 hours, Playing Time: 6-10 hours, Standby Time: 450 hours, Charging Time: about 2 hours, Voice Chat: Supported, Voice Prompt: Supported, Material: Aluminum alloy+ Silicone, Weight: 15gm, Package Included: 1 x Wireless Headphones, 1 x USB Charging Cable, 1 x S, L Size Earbuds, 1 x S,L Size Eartips, 1 x User Manual, Warranty - 1 Year, Country of Origin - China, Made in/ Assemble - China