▸ SKU: SERENE.BLACK
▸ Brand: Promate
▸ Model Name: Serene
▸ Type: Over-Ear Wireless Headphones
▸ Audio Technology: 360° Spatial Audio, High-Fidelity Sound
▸ Noise Cancellation: Hybrid ANC (Up to -35dB)
▸ Head Tracking: Dynamic Real-Time Audio Adjustment
▸ Bluetooth Version: 5.4
▸ Supported Profiles: A2DP, HFP, HSP, AVRCP
▸ Operating Range: Up to 10 meters
▸ Speaker Drivers: 40mm Custom-Tuned Drivers
▸ Impedance: 32Ω ±15%
▸ Frequency Response: 20Hz – 20kHz
▸ Signal-to-Noise Ratio: ≥98dB
▸ Microphone Frequency Range: 50Hz – 20kHz
▸ Microphone Sensitivity: -32dB ±2dB
▸ Microphone Impedance: 2.2KΩ
▸ Battery Capacity: Dual 400mAh Li-Polymer
▸ Playback Time: 40 Hours (28H with ANC)
▸ Standby Time: 85 Hours
▸ Charging Time: 3.5 Hours
▸ Charging Cable Length: 500mm (USB)
▸ RF Output Power: ≤9dBm
▸ Color: Serene Black