We will send a phone holder as gift. The color by random.This wireless doorbell kit is easy and convenient to use. It do not need to change batteries and arrange any wires for installation. The transmitter has many characteristics， such as durable to use， waterproof， high-temperature and low-temperature resistant. It has 36 ring tones for you to choose and has low crosstalk rate. Features: Easy to install with the double side adhesive tape and the screws. You can install the doorbells in locations， such as kitchen， back yard， bedroom， etc. Specifications: Receiver: Working voltage: 220V Working current: 120mA Power: 2W Power charger: EU plug Music: 36 cord music for option Sound: 25-80dB (4 grade volumes) Remote control distance: 100m (in open air) Work frequency: 315MHz Transmitter: Work voltage: 12V (Battery Model: 23A 12V) Work current: ?15mA(20 times a day by calculating， a high quality) LED indicator: press the send button， LED indicator light will flash， emitter work and the receiver receive the order and then send out the beautiful music reminded you the VIP visit， the blue-ray LED of the receiver will regular flash along with the music Temperature: -10 ~50 Product dimensions: Receiver: 9.5 * 6.0 * 6.9cm / 3.8 * 2.4 * 2.8in 8.3 * 6.1 * 2.5cm / 3.3 * 2.4 * 1.0in Product weight: Receiver: 66g / 2.32oz Transmitter: 40g / 1.41oz Package size: 10.3 * 6.3 * 7.8cm / 4.1 * 2.6 * 3.1in Package weight: 148g / 5.21oz Package List: 1 * Wireless Electronic Doorbell Receiver 1 * Transmitter 1 * Double Faced Adhesive Tape 2 * Screws 1 * User Manual(English) 1 * Lazy phone holder(color by random)