cute pet devil noise reduction wireless bluetooth headset BT.V5.0, with 15mm large transparent mode Feature: 1. Cute and unique PIG shape 2. The charging warehouse with a capacity of 700 can be used as a mobile power source to charge mobile devices. 3. Put it in any earphone and enter the charging warehouse, and call the other song that can be used normally. 4. Suitable for all mobile phone models, strong 5. 4 hours 6. Bluetooth technology, clear sound quality, intelligent noise reduction 7. Can wake up most voice assistants Product specification: Bluetooth version: V5.0 Wearing method: in ear Wireless transmission range: more than 15m Automatic power on, headset Bluetooth automatic pairing,-slave switching Frequency range: 2.402ghz ~ 2.480ghz Supporting protocols: HFP 1.7, HSP 1.2, A2DP 1.3, AVRCP 1.6 Transmission power: Class 2 max. 4dbm Audio signal-to-noise ratio: > 90dbm distortion: < 0.1% Sensitivity: 0.1% BER at - 90 Working voltage: 3.7V charging voltage: 5V Operating temperature: - 40 ° C to + 85 ° C Battery capacity of charging bin: 300mAh Headset battery capacity: 40 Mah Standby time: 120 hours Talk time: 4 hours Music playing time: 4 hours Package include: 2 x Bluetooth earphones (L+R) 1 x Charging box 1 x Charging cable 1 x User manual