Head-Mounted Folding Wireless Head-Mounted Bluetooth Headset Metal Chip Bluetooth FM Pluggable Card Feature: Wired and wireless dual-modeSmart Bluetooth stereo multi-function headset, one-touch connection, restored real sound, wired and wireless connection, it is a wireless headset and has a wired connection function, which can be used according to your own needs and mastered free Long standby timePolymer safety explosion-proof battery, can be used continuously, no longer worry about the battery is not durable, born for battery life Folding designSupport folding, easy to carry and store, foldable and retractable to adjust the wearing size, more practical and user-friendly Micro-adjustable earphonesSupport micro-motion stretching structure adjustment, can adjust the ear shell for more personal comfort, suitable for people with different head shapes Widely compatibleCompatible with 98% of digital devices in the market, including: earphones, GPS, tablet computers, hosts, mobile phones, MP3/MP4, etc Specification: Product name: Bluetooth Headset Product material: ABS Bluetooth version: BLE 5.1 Communication distance: 10m Charging interface: Micro Frequency range: 20Hz-20KHz Rated input: DC 5V-200mA Charging time: 2 hours Music playback time: 50 hours Standby time: 300 hours Product size: 18.8x18.5x7.8cm/ 7.4x7.28x3.07 inch Package size:20x15x4cm/7.87x5.9x1.57 inch Gross weight:202.5g/0.45 lb Package included: 1 x Bluetooth headset 1 x Use manual 1 x Charge cable