General Specifications Wireless Bluetooth Streaming Wirelessly connect your favorite devices with ease. Listen to music in expertly-designed stereo sound. Dual Microphone Conferencing Take crystal clear conference calls with the press of a button with top quality built-in noise and echo cancellation. 2500mAH Power Bank Built-in rechargeable Li-ion battery supports up to 10 hours of playtime while allowing you to charge your devices via USB. Advanced Craftsmanship A beautiful unibody aluminum design is accented with leather and a diamond-cut edge to create an elegant and durable travel companion. Compact Size Compact and slim enough to accompany you everywhere you go, you’ll always find yourself in upscale company. What’s in the box Harman Kardon Traveler USB charging cable Carrying pouch Warranty card Specifications • Transducers: 2 x 36mm • Rated power: 2 x 5W • Frequency response: 180-20kHz • Signal-to-noise ratio: 80dB • Battery type: Lithium polymer (3.7V, 2500mAh) • Micro USB rating: 5V, 1.0A • USB rating: 5V, 1.0A • Input connections: Bluetooth, AUX-in • Music play time: Up to 10 hours (varies by volume level and audio content) • Battery charge time: 3 to 5 hours (varies by charging current) • Dimensions (W x D x H): 160mm x 27.5mm x 67mm• Weight: 300g• Bluetooth version: 4.2 • Bluetooth transmitter frequency range: 2.402GHz~2.480GHz • Bluetooth transmitter power: 0~4dBm• Bluetooth transmitter modulation: GFSK, 8DPSK, π/4DQPSK