Technical specifications:

Driver Size: 32mm Dynamic

Driver Frequency Response: 20Hz – 20kHz

Bluetooth transmitter power: <4dBm

Bluetooth transmitter modulator: GSFK, π/4 DQPSK, 8DPSK

Bluetooth frequency: 2.402 – 2.480GHz

Bluetooth profile: BT 4.1, A2DP v1.2, AVRCP v1.5, HFP v1.6, HSP v1.2

Battery type: Lithium-ion Polymer (3.7V, 300mAH)

Charging time: 2 hrs

Music play time with BT on: 16 hrs Weight: 155g