Walk Audio Exceptional Quality Wireless Earphones, Delivering Unsurpassed Sound Quality With Enhanced Bass. Ergonomic Design Ensures The Earphones Stay In Place During Sporting Activities, Making Them Ideal For The Gym, Running, Cycling Etc. Sturdy Metal Body Construction with Multiple Size Ear-Buds for Optimal Comfort. Long Life Rechargeable Lithium Battery Gives 5-6 Hours Playing Time From A 1-Hour Charge, With 240 Hours Standby. High Quality CSR-Bluetooth Module Allows For Effortless Connection to Any Bluetooth-Enabled Device to Allow You to Control Music or Phone Calls Hands-Free.