Transducer: 40mm / 1.5′′ Output power: 5W RMS Frequency response: 100Hz – 20kHz Signal-to-noise ratio: 85dB type: -ion polymer 3.885Wh charge time: 3 hours (5V/500mA) Music playtime: up to 10 hours (varies by volume level and audio content) Bluetooth version: 5.1 Bluetooth profile: A2DP 1.3, AVRCP 1.6 Bluetooth transmitter power: 10 dBm (EIRP) Bluetooth transmitter modulation: GFSK, /4 DQPSK, 8DPSK Dimensions (W x H x D): 3.4′′ x 5.3′′ x 1.8′′ Weight: 0.527 lbs