Sony WI-C400 Wireless in-Ear Neck Band Headphones with 20 hrs Battery Life, Light Weight, Bluetooth Headset with mic for Phone Calls, Vibration Notification, Work from Home, Tangle Free Cable (Black)

Battery Life : Up to 20 Hours of battery life, Charge Time : Approx. 4.5 hrs
Behind the Neck Style Headphones : Comfortable behind-the-neck style with cable management
Headphones with Mic : In-Built Mic for Hands free calling with HD voice, Vibration for incoming call to get alert for every call
Light Weight : Portable headphones with ultra lightweight at 35g design
Voice assistant : Google Assistant for voice access to music, information and more. Activate with a simple touch
Driver Unit : 9mm driver unit offers clear sound quality