Wireless Bluetooth Headphones 510BT Color: rose

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Specs:
Driver Size: 32mm/1.26" Dynamic Driver
Power supply: 5V 1A
Weight: 160g / 0.35lbs
Headphone battery type: lithium-ion battery (3.7V/450mAh)
Charging time: 2 hours
Music play time with BT on: up to 40 hours
Frequency response: 20Hz - 20kHz
Impedance: 32 ohms
Sensitivity: 103.5dB SPL@ 1kHz 1mW
Maximum SPL: 95dB
Microphone sensitivity: -29dBV@1kHz/Pa
bluetooth version: 5.0
Bluetooth Profile Version: A2DP v1.3, AVRCP v1.6, HFP v1.7
Bluetooth transmitter frequency range: 2.4GHz - 2.4835GHz
Bluetooth Transmitted Power: <8dBm
Bluetooth transmitted modulation: GFSK, π/4 DQPSK, 8DPSK
Maximum operating temperature: 45°C