Headset -Wireless Stereo Headset Stereo In Ear Highlights Generic Wireless Stereo Headset Stereo In Ear Y30 Portable Wireless Bluetooth Earbuds Earbuds Headset Feature: 1. Bluetooth version 5.0 to provide a high-speed data transmission and stability. 2. 10m effective transmission distance allows you to make clear calls, and the high sensitivity of the microphone can help you make hands-free calls easily. 3. Stereo speakers bring powerful bass, giving you the pleasure of listening to music. 4. Super long play time for 4 hours. Specification: BT Version: BT5.0 Transmission Distance: 10m/33ft BT Protocol: HFP, A2DP, HSP, AVCRP Frequency Range: 20-20000Hz Sensitivity: 98dB Waterproof: IPX5 Charging Box Capacity: 3.7 V 450 mAh Battery capacity of earphones: 2*3.7V 50mAh Music playing time: about 4 hours (depending on music volume) Charging time: about 1.5 hours for earphones, 2 hours for headphones Charging box Earphone item size: 25*30*26mm Earphone weight: 3.5g/0.14oz (each earphone) Charging box size: 62*40*27.2mm/2 ,44*1.57*1.07 in Charging box weight: 35.4g/1.24oz Package includes: 2x mini earbuds (left and right earbuds) (5-pack) 1x charging box ( pack of 5) 1x micro-USB cable (pack of 5) 1x user manual (pack of 5)