i7s TWS Twins Bluetooth Earbuds with Charger Box

• Driver: 15mm
• Bluetooth version: Bluetooth v4.2 + EDR
• Bluetooth use band: 2.4GHz
• Power level: CLASS II
• Output power: 30mW
• Bluetooth distance: 7-10 meters barrier
• Frequency response: 20-20000Hz
• Operating voltage range: 3.0V-4.2V
• Mic sensitivity: -42dB
• With A2DP / AVRCP high quality stereo audio transmission and remote control protocol
• (boot does not connect Bluetooth state, press the switch 2 times, hear the tone switch successfully)
• Talk time is about 2-3 hours
• music time about 3-4 hours
• Standby time is about 2-3 days

• Driver: 15mm
• Bluetooth version: Bluetooth v4.2 + EDR
• Bluetooth use band: 2.4GHz
• Power level: CLASS II
• Output power: 30mW