Dimensions (H x W x D) – 216 × 82 × 59 mm (8.5 x 3.2 x 2.3 in.) Weight – 740 g (1.6 lbs) Drive units HF: 20 mm (0.75 in.) MF/LF: 58 x 117 mm (2.5 x 5 in.) supported by P-Flex Amplifiers HF: 1 x 10W Class D MF/LF: 1 x 30W Class D Max SPL measured at 1m 90±3 dB Frequency response (±3dB) measured at 85dB/1m – 43 Hz – 20 kHz Dust and Waterproof Rating – IP67 Operation Temperature – -20°C to 45°C Sustainability Plastic components comprise post-consumer recycled materials Connectivity Bluetooth Version Bluetooth 5.4 APP KEF Connect Bluetooth Codecs – aptX Adaptive, SBC, AAC Wired connectivity – USB-C (Charging and Playback) Speakerphone Support noise and echo cancellation Fast Pairing Google Fast Pair Microsoft Swift Pair Supported resolution aptX Adaptive up to 48 kHz/24 bit USB-C up to 48 kHz/24 bit *Depends on support of the source device Stereo pairing – True Wireless Stereo (TWS) Multiple speakers pairing Supported by Auracast™ *Compatibility depends on source device Battery Battery Playtime Up to 24 Hours *Moderate volume level Charging Time Fully charged in 2 hours *Based on 20V1.5A charger Fast Charging 3 Hours Playtime in 15 mins *Moderate volume level