Play and Charge endlessly Introducing the JBL Charge 4 portable Bluetooth speaker with full-spectrum, powerful sound and a built-in power bank to charge your devices. It features a proprietary developed driver and two JBL bass radiators that intensify sound with strong deep bass. Its high-capacity 7800mAh rechargeable Li-ion battery provides up to 20 hours of playtime. The speaker carries a convenient USB charge out to quickly charge your devices, such as your smartphone, so you will never run out of power again. The Charge 4 features a rugged design, IPX7 waterproof rated exterior and comes in a suite of cool colors. Together with JBL Connect+ it can wirelessly link more than 100 JBL Connect+ enabled speakers to elevate your listening experience. Features and Benefits: Wireless Bluetooth Streaming - Wirelessly connect up to 2 smartphones or tablets to the speaker and take turns enjoying powerful sound. 20 hours of playtime - Built-in rechargeable Li-ion 7800mAH battery supports up to 20 hours of playtime and charges your device via USB port. IPX7 waterproof - Take Charge 4 to the beach or the pool without worrying about spills or even submersion in water. JBL Connect+ Amplify your listening experience to epic levels and rock the party perfectly by wirelessly connecting more than 100 JBL Connect+ enabled speakers. Durable fabric and rugged material - The durable fabric material and rugged rubber housing allows your speaker to outlast all of your adventures. JBL Bass Radiator - Dual passive radiators deliver powerful, ear catching JBL sound that resonates loud and clear. What’s in the box: 1 x JBL Charge 4 1 x Type C USB cable 1 x Quick Start Guide 1 x Warranty Card 1 x Safety Sheet Technical specifications: Bluetooth® version: 4.2 Support: A2DP V1.3, AVRCP V1.6 Transducer: 50 x 90mm Rated power: 30W RMS Frequency response: 60Hz–20kHz Signal-to-noise ratio: >80dB Battery type: Lithium-ion Polymer 27Wh (Equivalent to 3.6V 7800mAh) Battery charge time: 4 hours (5V/2.3A) Music playtime: up to 20 hours (varies by volume level and audio content) USB charge out: 5V/2A (maximum) Bluetooth® transmitter power: 0-20dBm Bluetooth® transmitter frequency range: 2.402 – 2.480GHz Bluetooth® transmitter modulation: GFSK, π/4 DQPSK, 8DPSK Dimension (W × D × H): 220 x 95 x 93mm Weight: 965g