SPECIFICATIONS

Brand Name: Retekess

Model Number: T128

Certification: CE

Certification: FCC

Watch Working voltage: DC3.7V rechargeable Li-poly battery

Watch Input power: 5V

Watch Receiving distance: 80 meter (open area)

Button Power: 2pcs 3V CR2016 battery (included)

Four key: Call, Cancel, Pay, Order

Choice: yes