Promotional Price Earphone Mobile Phone Earphone Wireless Earbuds 3.5mm in-ear Bass Stereo Earphone Certification: FCC Is wireless: Yes Wireless Type: Bluetooth Support Memory Card: No Vocalism Principle: Balanced Armature Volume Control: No Control Button: No Codecs: AAC Brand Name: OEM Model Number: MR001 Style: In-Ear Communication: Wireless Use: Portable Media Player, Mobile Phone, Audiophile, travel Function: Waterproof, Noise Cancelling, Microphone Place of Origin: Guangdong, China Cord Length: 0 Bluetooth Standard: B t V5.0 Waterproof Standard: IPX-7 Active Noise-Cancellation: Yes Horn specifications: 16 Ω 8 mm/bass speaker Microphone sensitivity: 42db±2db Signal to noise ratio: 102 db Frequency response range: 20~20 KHZ Headset battery capacity: 45mAh Battery capacity: 450mAh Charging time: 60 minutes Standby time: 6 months in the charging case Listening time: about 6 hours