Product information:
Name: TWS 
Brand: Oki
Item no:  i7 TWS
Color: black, white, red, gold, rose gold
Product features:
Wireless Binaural music Bluetooth headset

Weight: 100 g/full set

Display: Apple ISO system battery display
Links: can link two Bluetooth devices
Bluetooth version: V4.2
Music/talk time: 3-4 hours

Standby time: 100 hours
Battery type: rechargeable lithium polymer battery
Features: quick charging, HD calling
Voice: switch in English, the link is down by 2 power button
Chip: CSR63120

Configuration: 2 I7 TWS independent Bluetooth wireless headset, charging cable, instructions in English, and cover package