Key FeaturesGeneral Specifications Transducers: 48 x 90 mm woofer, 20 mm tweeter Rated output power: 1x25WRMS+1x15WRMS Frequency response: 60Hz – 20kHz(-6dB) Signal-to-noise ratio: > 80 dB Battery type: Li-ion polymer 17.28 Wh (equivalent to 3.6 V / 4800 mAh) Battery charge time: 2.5 hours (5 V / 3 A) Music play time: up to 12 hours (dependent on volume level and audio content) USB port: USB-C (USB playback is available in US version. For other version, USB is for service only.) Cable type: USB-C charging cable (not included) Cable length: 1.2 m / 47.2” Maximum operation temperature: 45 °CWireless Specifications Bluetooth® version: 5.3 Bluetooth® profile: A2DP 1.3, AVRCP 1.6 Bluetooth® transmitter frequency range: 2400 MHz - 2483.5 MHz Bluetooth® transmitter power: ≤ 15 dBm (EIRP) Bluetooth® transmitter modulation: GFSK, π/4 DQPSK, 8DPSKDimensions Product dimensions (WxHxD):210x78x80mm/8.3”x3.1”x3.2” Product weight: 0.71 kg /1.56 lbs Packaging dimensions (W x H x D): 240 x 115 x 100 mm / 9.5” x 4.5” x 3.9” Packaging weight: 1.13kg / 2.48 lbsWhat’s In The Box 1 x Harman Kardon Luna