SIZE-DEFYING SOUND. The most flexible member of the PULSE family, the PULSE FLEX 2i delivers the best of performance and true wireless portability. An upgraded bass driver adds some serious punch to the output of this small but mighty speaker, and our advanced DirectDigital™ amp delivers deep, detailed sound wherever you listen. RULE YOUR SONIC DOMAIN. Now with AirPlay 2 built-in and easy integration into the Apple ecosystem, the PULSE FLEX 2i is more flexible than ever, while a new dual band WiFi engine keeps connectivity rock-solid, especially in crowded airspace. SURROUND YOURSELF WITH SOUND. Group the PULSE FLEX 2i with other Bluesound players to play music across different rooms in perfect sync, or combine a pair of PULSE FLEX 2i speakers with the PULSE SOUNDBAR 2i and SUB to create a completely immersive Dolby Digital Surround system, for every lush cinematic detail. HIGH FIDELITY. ANYTIME. ANYWHERE. Why just be in the crowd, when you can be in the front row? Simply, add the battery pack for grab-and- go streaming. Take the show on the road, the party to the park and the beats to the furthest reaches of your home. Specs: 25W TOTAL SYSTEM POWER DIGITAL AMPLIFIER AIRPLAY 2 INTEGRATION DUAL-BAND WIFI + ETHERNET QUALCOMM aptX® BLUETOOTH FLEXIBLE IN/OUTDOOR PORTABILITY 1 x 25mm (1”) TWEETER 1 x 89mm (3.5”) WOOFER USB TYPE A INPUT OPTICAL & ANALOG INPUTS HEADPHONE OUTPUT ASSIGNABLE HARD-BUTTON PRESETS SEALED ENCLOSURE RECHARGEABLE BATTERY PACK (SOLD SEPARATELY) BLACK OR WHITE FINISH Operating System: BluOS Supported Operating Systems: iOS, Android, Windows Vista, 7, 8, 10, macOS X 7-10 Supported File Formats: MP3, AAC, WMA, WMA-L, OGG, FLAC, ALAC, WAV, AIFF, MQA Native Sampling Rates: 32 - 192kHz Bit Depths: 16 - 24 Music Service Integrations: 17+ 3rd-Party Integrations: AirPlay 2, Apple Wireless Accessory Configuration (WAC) Control System Integrations: Crestron, Control 4, RTI, ELAN, URC, Push, Lutron, iPort Voice Control Integrations: Supports Amazon Alexa, Google Assistant Features Play/Pause Button: Hard Button Volume Control Buttons: Hard Button Previous/Next Track Buttons: Hard Button Preset Buttons: Hard Button x 5 Processor: ARM®Cortex™ -A9, 1 GHz Distortion: THD+N, 0.030% Amplification: Digital Power Output: 25W total system power, bi-amplified 20W x 1 Woofer; 5W x 1 Tweeter Speakers: 3.5” (89mm) x 1 Woofer; 1” (25mm) x 1 Woofer Frequency Response: 45Hz - 20kHz Connections Power: Universal bi-pin AC cord input (100-240AC) Ethernet/LAN: Ethernet RJ45, 100BaseT WiFi Built In: 802.11ac, dual-band Bluetooth: Built In Bluetooth Quality: Qualcomm aptX Bluetooth 4.1 Bluetooth Connectivity: One-Way (receive) IR Optical Built In: IR Sensor Built In - front panel Optical/Analog Input: Combo - Toslink/3.5mm USB IN: Type A (Fat32 Formatted) USB: Type B (mini) for product servicing Headphone Output: 3.5mm Stereo Power Consumption (Idle/Standby): 3 Watts/