**Product Specifications:**
**Brand:** Sennheiser
**Model:** MOMENTUM4 Wireless Headphones
**Inspired by Music:** Let inspiration be heard. Take control of your sound world and listen only to what you want to hear.
**Innovative Hybrid Adaptive Noise Cancellation:** Continuously monitors environmental noise to automatically optimize noise cancellation levels.
**4 External Adaptive Noise-Canceling Microphones, 2 Internal Adaptive Noise-Canceling Microphones (invisible).**
**New Smart Touch Gesture Controls:** Adjust noise cancellation intensity with intuitive gestures.
**60 Hours of Extended Battery Life:** Enjoy immersive sound experiences anytime, anywhere. 2 hours of charging provides 4 hours of playback.
**Comfortable All-Day Wear:** Ergonomic soft ear pads, headband, and low-pressure headband for lightweight and comfortable wearing experience.
**High-Quality Voice Pickup and Smart Pause:** Automatically pause/play music when headphones are removed or worn.
**Bluetooth 5.2 Technology:** Lower latency, higher transmission stability for better audio-visual synchronization.
**Codec Support:** SBC, AAC, aptX, aptX Adaptive for ideal sound quality selection.
**SmartControl App Features:** Customizable EQ presets, firmware upgrades, Bluetooth management, and more.
**Fashionable Design:** Crafted with a sleek and elegant industrial design, featuring smooth contours and versatile fabric headband.
**Package Contents:** MOMENTUM4 Wireless Headphones, Headphone Case, Audio Cable, USB-C Charging Cable, Airplane Adapter, Quick Start Guide, Safety Guide.
**Wearing Style:** Over-ear stereo headphones
**Connectivity:** Bluetooth 5.2 compatible
**Transducer Principle:** Dynamic driver
**Transmission Frequency/Modulation:** 2,402MHz to 2,480MHz, GFSK, π/4DQPSK/8DPSK
**Supported Codecs:** SBC, AAC, aptX, aptX Adaptive
**Supported Profiles:** A2DP, AVRCP, HFP
**Microphone Frequency Response:** 50Hz-10kHz
**Speaker Frequency Response:** 6Hz-22kHz
**Speaker Sensitivity:** 106dBSPL (1kHz/0dBFS)
**Total Harmonic Distortion of Speaker:** <0.3% (1kHz/100dBSPL)
**Microphone Pickup Pattern:** 2x2 microphone array, digital noise cancellation
**Battery Life:** Up to 60 hours of playback with ANC on and Bluetooth connected (*Sennheiser Lab Data)
*Comparison with MOMENTUM3 Wireless Headphones:*
**Sound Calibration:** Yes
**Active Noise Cancellation:** Yes
**Adaptive Noise Cancellation:** Yes
**3 Selectable Noise Cancellation Modes:** Yes
**Transparent Hearing:** Adjustable intensity, can be activated
**Rotatable Hinges:** Yes
**Battery Life:** 60 hours (MOMENTUM4) vs. 17 hours (MOMENTUM3)
**Call and Voice Assistant Activation:** 2x2 microphone array (MOMENTUM4) vs. 2 microphones (MOMENTUM3)
**Touch Controls:** Yes
**Adjustable Sidetone:** Yes
**Automatic Wind Noise Suppression:** Yes
**Bluetooth Version:** 5.2 (MOMENTUM4) vs. 5.0 (MOMENTUM3)
**Supported Codecs:** SBC, AAC, aptX, aptX Low Latency (MOMENTUM4) vs. SBC, AAC, aptX, aptX Low Latency (MOMENTUM3)
**Bluetooth Codec Support:** Adaptive, Latency (MOMENTUM4)
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