specification: bluetooth: 4.0 battery: 50ma polymer lithium ion charging time: 1 hour waterproof: life waterproof operating temperature: -10 to 45 storage temperature: -20 to 60 support: ios 7.1 and android 4.4 or higher synchronization range: 3m (theoretical rank is 10m without interference)
specification: bluetooth: 4.0 battery: 50ma polymer lithium ion charging time: 1 hour waterproof: life waterproof operating temperature: -10 to 45 storage temperature: -20 to 60 support: ios 7.1 and android 4.4 or higher synchronization range: 3m (theoretical rank is 10m without interference)
