Name of the series: JHead Model of the Series: JR-JH2 ANC Wireless Headphones are the name. Version 5.4 of BT SBC and AAC audio decoding for BT 800mAh is the battery's capacity. Specifications for the speaker: 40mm (32Ω±15% at 1kHz) Sensitivity of the speaker: 119±3dB (at 1kHz, 0.126V) Range of frequency response: 20 Hz–20 kHz Band of frequencies for BT: 2.402-2.480 GHz Maximum power output: 10 mW BT range: greater than 10 meters Time on standby: 150 hours 100 hours of playback (ANC off) at 70% volume Playback duration (ANC enabled): 70 hours at 70% volume 60 hours of talk time at 70% volume 1.5 hours for charging 3.5mm audio adapter cable for AUX support Type-C charging port Input power: 5V⋓1A Material: silicone, hardware, PU, and ABS 236g is the net weight. Dimensions: 195*175*90 mm