ENGLISH
CHARACTERISTICS
Model...............................................................................LD-TWS-XT91
Bluetooth version ................................................................. V5.0+ EDR
Bluetooth mode ........................... A2DPV1.3/ AVCTPV1.4/ AVDTPV1.3
..................... AVRCPV1.6 / GAVDPV1.3/ HFPV1.7/ HIDV1.0/ EDR\BLE
Bluetooth frequency ...................................................................2.4GHz
Bluetooth range .......................................10 meters (without obstacle)
Speakers ................................................................................. 2 x 5 mW
Microphone ................................................................................ Built-in
Charging ..................................................... 5V USB/DC charger socket
Battery capacity
Individual ....................................................................................35mAh
Charging station .......................................................................250mAh
Autonomy in Play mode
Individual earbud ....................................................................... 3 hours
Pairing mode .......................................................... 2 hours 30 minutes
Autonomy in standby mode
Individual earbud ................................................................... 100 hours
Pairing mode ........................................................................... 60 hours
Max. acoustic pressure ............................................................... ≥90dB
Frequency response .......................................................... 50Hz-20KHz
Impedance............................................................................... 30 ohms
Accessories .......................Charging unit, USB C cable, earphone caps
TIP FOR EARPHONES USING
1 The earphones will power on and pair automatically when taken
out from charging case. If not, please press earphone buttons for
3 seconds to power on manually. The LED indicator of one of the
earbuds turns off while the other continues to flash. The pairing is
successful.
2 Turn on Bluetooth on your device (ex. smartphones) and select
<<KEPLER>> to connect.
3 Put the earphones back into the case, they will power off automa-
tically and go in charging status, and stop charging when it's fully
charged.
4 The left and right earphones are both able to work with bluetooth
separately.
4