Please Note: Most orders are handled within 2-3 business days. Our stated 5 business days handling time applies only in rare circumstances. Our stated free shipping cost for large/bulky items (large furniture, appliances, electronics, etc.) is only applicable for orders with shipping addresses within mainland USA (Upper 48 States). Customers located outside of the mainland USA region (Guam, Hawaii, US Virgin Island, Alaska, Puerto Rico, etc.) must contact us to make shipping arrangement before submitting an order for any such large bulky items. Failure to adhere to the above requirement for large/bulky items, may result in automatic order cancellation. Bluetooth version: V5.0 dual modes Distance: 15-20 meters Battery: Rechargeable lithium battery 55mAh Full charge time: 1.5 hours Play time: about 3.5 - 5 hours * 4 Earplug charging current: 50mA Microphone sensitivity: STILL UNDECIDED? COMPARISON SHOP AND CONSIDER PURCHASING THIS OR A SIMILAR ITEM BY CLICKING ON OUR AFFILIATE PARTNER LINK(S) BELOW. YOU MAY FIND LOWER PRICES, FREE FASTER SHIPPING ON THIS SAME OR A SIMILAR PRODUCT. Please Note That The Above Buttons Contain Affiliate Links for Which We May Be Compensated (At No Additional Cost to You) for Being An Partner Amazon Associates Program Active Participant. Your Support Is Greatly Appreciated. Thank You! Features: Brand Name:GDLYL Style:Ear Hook Vocalism Principle:Dynamic Origin:Mainland China Active Noise-Cancellation:No Control Button:No Communication:True Wireless Volume Control:Yes Certification:CE Number Of Drivers:2 Plug Type:Line Type Impedance Range:up to 32 ? Headphone Pads Material:Other Support Memory Card:No Waterproof:Yes Wireless Type:bluetooth Package List:User Manual Package List:Charging case Package List:Charging Cable Codecs:sbc Is wireless:Yes Connectors:USB Earcups Type:Semi-open Bluetooth Version:5.0 Charging Method:Charging case Support APP:No Function:Common Headphone Function:For Mobile Phone Function:HiFi Headphone Function:Sport With Microphone:Yes Features:waterproof Features:With Microphone Feature 1:TWS Headphone Bluetooth v5.0 Earphones Feature 2:Sport Running Earphones Feature 3:Bluetooth 5.0 Headphones Feature 4:Sport Earphones, HiFi Sound Stereo Feature 5:Wireless Bluetooth Earphones Feature 6:Wireless Bluetooth 5.0 Headphones Feature 7:Headphone With Microphone Feature 8:Earphone Bluetooth 5.0 +Wireless Bluetooth Headset Package Includes: 1 x Office Wireless Headphone Listing and template services provided by inkFrog Please Note: Most orders are handled within 2-3 business days. Our stated 5 business days handling time applies only in rare circumstances. Our stated free shipping cost for large/bulky items (large furniture, appliances, electronics, etc.) is only applicable for orders with shipping addresses within mainland USA (Upper 48 States). Customers located outside of the mainland USA region (Guam, Hawaii, US Virgin Island, Alaska, Puerto Rico, etc.) must contact us to make shipping arrangement before submitting an order for any such large bulky items. Failure to adhere to the above requirement for large/bulky items, may result in automatic order cancellation.