Motorcycle Helmet BT Headset Wireless Waterproof Noise Cancellation BT Helmet Intercom with Microphone Support Hands-Free Calls Helmet Headset for Ski ATV Dirt Bike ( Item#: K22508 )

Features:
Multi-User Interaction: The helmet intercom headset allows for easy and efficient wireless communication among multiple users, making it an ideal tool for outdoor activities, professional use, or specific work scenarios.
All-in-One Audio Solution: This motorcycle helmet headset is more than just a communication device.  It also offers audio playback, voice navigation, and hands-free calling, making it a versatile tool for all your audio needs in various scenarios.
Easy Connectivity: The BT feature of the headset allows for quick and easy pairing with other devices, ensuring you stay connected without any hassle.
Waterproof Design: With its superior waterproof design, the headset is built to withstand harsh outdoor conditions, making it a reliable choice for work or sports activities.
Clear Sound: Say goodbye to background noise.  With advanced noise reduction technology, this BT headset ensures you enjoy clear communication, no matter where you are.

Specifications:
Item Name: Helmet BT Headset
Main Material: ABS, Silicone
Speaker Diameter: 40MM
Speaker Impedance: 32Ω
Speaker Response Frequency: 0-20KHz
Microphone Diameter: 6.02.7
Microphone Sensitivity: -38±3db
Microphone Impedance: 2.2K
Wireless Solution: BT 5.2
Power Supply Voltage: VDD3.8V
Supported BT Protocols: A2DP, AVRCP, HS/HF
Operating Current: <30MA
Standby Current: <3MA
Temperature Range: -10~60℃
Intercom Wireless Transmission Range: 1000M
Transmission Power: 20db
Sensitivity: -85db
Frequency Range: 2.402GHZ-2.480GHZ
External Interface: Type-C
Audio Signal-to-Noise Ratio: ≥60db
Distortion: ≤0.01％
Chip: QCC3024
Phone Call Distance: 10M
Standby Time: Approximately 260 hours
Working Time: Approximately 25 hours
Battery: 850mAh
Charging Time: Approximately 2.5 hours
Charging Voltage: 5V
Charging Current: 470mA
Main Functions: Intercom auto-reconnect, phone call, voice assistant, ambient light
Color: Black
Size: 81*53*21mm

Package Information:
Package Size: 11.7*9.5*6cm
Package Weight: 146g

Package List:
1 * Host
1 * Changeable Hard Mic and Soft Mic Speakers
1 * Fixed Base 
1 * Hook & Loop Kit
1 * Sticker
1 * Type-C Charging Cable
1 * User Manual