Features: 1.TWS wireless Bluetooth input 2.Hand-free function 3.Play/pause 4.Vol.-/Previous song 5.Vol.+/Next song 6. Line in Aux 7.Waterproof IP66, anti-dust, anti-drop option, unique design                                                  8. Outdoor tough speaker                                       9. Energy saving, battery capacity display                                                             10. Bluetooth connect and cancel pairing. Specification: Bluetooth version: V4.2 TWS couple speakers Bluetooth support protocol: A2DPV1.2, AVRCPV1.4, HSPV1.2 HFP1.6 Wireless frequency range: 2.402 GHz ~ 2.483GHz Modulation: GFSK Bluetooth distance: 10m Audio frequency range: 20Hz ~ 20KHz Speaker: ¢ 45 4Ω 5w Microphone: Highly flexible capacitive mic 4X1.5mm Battery type/capacity: Lithium battery/1000mAH/Seiko protection board Charging time: 1.5H Charging voltage: DC 5V Talk time: 5.5H Play time: 6H (80% of volume) Standby time: 500H Packing Gift card box or simple white box Custom design box as per order demands Export packing: PP bag-unit box-inner carton-export carton