TWS Bluetooth Headset i11 Dual Call Popup Pairing I11 - 
 
Product advantages:
⊙1.Intelligent compatibility: support all Bluetooth mobile phones, tablets, notebooks, singing, music, movies, etc.
⊙2. Advanced Bluetooth 5.0: Bluetooth 5.0 technology provides a stable wireless connection for your smartphone and other Bluetooth devices. No wires are entangled, and earbuds can be quickly paired with a stable connection, up to 10m Bluetooth range or longer.
⊙3. Voice reminder: remind the phone number, the last call back, all intelligent Chinese and English voice calls, boot, couple, shutdown phone will be low voice call;
⊙4. One-to-two connection: two mobile phones can be connected at the same time
⊙5. Automatic connection: Connect the Bluetooth headset to the phone and then connect the phone, then turn on the Bluetooth headset to automatically reconnect the phone, which is more convenient;
⊙6. The headset has buttons for multi-function operation. (touch)
⊙7.HIFI high quality! Comfortable to wear, not easy to fall, more suitable for sports outdoors.

Product Details:
Bluetooth chip / version: V5.0 + EDR Jerry 6916
Speaker impedance: φmm32Ω±15%
Microphone sensitivity: + -40DB
Wireless frequency: 2.405GHZ-2.480GHZ
Charging box capacity: 300mah
Headphone battery capacity: 35 mAh
Working temperature: -10 -55 °C
Power: DC5V
Material: PC + ABS
Supported file formats: A2DP, AVRCP, HSP, HFP
Transmit power: CLASS 2
Wireless distance: 10M or more
Play time: 3 hours (the charging box can charge the headset 5 times)
Charging time: 1-2 hours
Standby time: 100 hours

The package contains:
2 *mini headphones (left and right ears)
1 * charging box
1 * charging cable
1 * User Manual