✨Product Feature✨ Horn unit: 40MM diameter; impedance: 32Ω±15% Sensitivity: 98dB±3dB; Frequency response: 20HZ~20000Hz Bluetooth specifications: Bluetooth V5.4 Jerry JL7006F8 Supported protocols: A2DP, AVRCP, HSP, HFP; transmission range: 10 meters Transmission frequency: 2402-2480MHZ; Maximum RF output power (EDR): 7DB; Modulation type (EDR): GFSK, π/4-DQPSK Charging voltage: DC 5V; Charging time: about 2 hours Call time: about 90 hours (65 hours on ANC); Music time: 90 hours (65 hours on ANC) (80% volume) Standby time: more than 200 hours; 800mAH Class A Polymer Battery Net weight of product: 198g; Product size: 195*185*84mm