Speaker 2 In 1 Bluetooth Speaker With Headset

  K045 two-in-one audio headphones Headphone size: 30*20mm  Audio size: 143*60mm  Product bare weight: 247 grams  Product weight with packaging: 301.5 grams  Color box size: 15*6.9*6.9CM  Case: 36*31.5*30CM, 40pcs, 12.9kg Bluetooth:Version:V5.1(Speaker)/V5.1(Headset) Transmission range:≤10m Support protocol:A2DP/HFP/HSP/AVRCP Speaker: drive unit: 40mm (speaker) / 10mm (headphones) Impedance: 320 (speaker), 3.60 (headphone) rated power: 3mW Frequency response: fx-14kHZ(speaker) / 20HZ-20kHZ(headphone) Battery Speaker standby time:1000H Headphone standby time:40H Speaker battery capacity:1200mAh Headphone battery capacity:40mAh Speaker play time:5-6H Headphone playback time:4-5H Speaker charging time:3.5-4H Headphone charging time:1.5-2H