Mini Wireless Dual TWS Earphone X21S Hidden Small Bluetooth Invisible Earbud 3 Hours Music Play With Charging Case

Overview:
1. English voice prompt.
2. Call number broadcast.
3. IOS system power display.
4. Call answer/reject.
5. Last number redial.
6. HD voice quality.
7. Solution: high-end solutions.
8. Support mode: compatible with all Bluetooth versions.
9. Signal transmission channel: Cassl2.
10. Wear: semi in-ear style wear.
11. Microphone sensitivity: -42DB backend high-end transmitter.
12. The longest transmission range: 10-15 meters.

Specification:
How to use: Car hands-free
Whether single or double ears: bilateral stereo
Applicable gift-giving occasions: weddings, birthdays, holidays, housewarming, trade fairs, advertising promotions, employee benefits, anniversary celebrations, business gifts, opening ceremonies, awards commemorations, public relations planning:
Material: Plastic
Package Size:130 x 70 x 110 mm
Color: Black, White, Red, Pink, Skin Tone
Transmission rate: 24MBPS
Long talk time: 3-4 hours
Listening to music time: 3-4 hours
Input voltage: DC5V 1A (maximum)
Charging time: 1.5 hours
Standby time: 150 hours
Input voltage: DC5V
Input current: 1A
Output voltage: 5V/160ma (Max)
Output current: 2.1A
Battery capacity: 350mAh
RF transmission power: 90DB (transmission is more stable)

Packing list:
1XHeadset
1 x charging case
1 x charging cable